The summer is a good time to take stock of how your kids are faring. Are they doing something that excites them? Do they wake up every morning eager to get going? Are they happy? 

I did not ask about their grades, because if you answered “yes” to those questions, their GPA truly doesn’t matter. It matters if they are thriving. 

For my book “Raising an Entrepreneur,” I interviewed 70 parents who raised highly successful adults about how they helped their kids achieve their dreams. It was a diverse group, and the cohort included people of different races, religions, incomes, family structures and educational backgrounds.

While many of these young people were not great students, all of them excelled because they found interests and communities that lit a fire in them.

Here are the four things that the parents of the most successful people always did when their kids were young: 

Every successful adult I spoke to had a passion growing up. With the exception of the artists, who maintained their practice into adulthood, many of these leaders pursued careers that have nothing to do with what they loved as kids. 

So why was it so important that the parents encouraged whatever passion their children had?

Since the activity was something they chose for themselves, they were excited to work hard at it. They learned grit and perseverance and became quite skilled. These experiences taught them to believe in their ability to succeed when they put their all into something.

Although many of the parents didn’t understand their kid’s passion, they supported them, because they saw the joy their child got from it. The most successful adults grew up knowing that their parents would always be there for them, no matter what they tackled.

The most successful entrepreneurs I profiled in my book are risk takers. 

In my research, I found that the people who are most willing to take risks are the people who weren’t punished for, or taught to fear, failure when they were young. This approach reminds me of a Billie Jean King quote I love: “We don’t call it failure, we call it feedback.”

Their parents always taught them that while it’s good to compete, to fight to succeed, and to win, it’s also good to lose. Setbacks are a chance to learn, grow and develop a sense of resilience.

The parents I interviewed always cheered on their children’s efforts, rather than only focusing on their achievements. 

Children who are invited to be curious learn that if they keep exploring, they will figure out a way to improve, or expand, or reinvent something they love and know a lot about. 

The future entrepreneurs in my book were taught by their parents to ask, “Does it have to be this way? How can I make it better?” These questions are often how the most successful companies get started. 

Many parents told me that they didn’t want their kids to be satisfied with something “because that is the way it is.” 

As their children grew more capable, the parents also resisted the temptation to do or fix things for them. Instead, they give their kids the tools to solve problems themselves.

Most of the entrepreneurs in my book were taught early on to empathize with others, and they grew up wanting to solve the concerns and problems of the people around them and in their communities. 

They were raised with a genuine desire to improve people’s lives. Their parents never told them that the goal was to make the most money, although that was often the result. 

This sense of compassion is what led them to want to create that piece of art, or product, or service that could bring people a sense of ease and joy. In turn, that foundation helped them build successful careers and lives. 

Margot Machol Bisnow is a writer, wife, and mom from Washington, DC. She spent 20 years in government, including as an FTC Commissioner and Chief of Staff of the President’s Council of Economic Advisers, and is the author of “Raising an Entrepreneur: How to Help Your Children Achieve Their Dream.” Follow her on Instagram @margotbisnow.

Want to stop worrying about money? Sign up for CNBC’s new online course Achieve Financial Wellness: Be Happier, Wealthier & More Financially Secure. We’ll teach you the psychology of money, how to manage your stress and create healthy habits, and simple ways to boost your savings, get out of debt and invest for the future. Start today and use code EARLYBIRD for an introductory discount of 30% off through Sept. 2, 2024.

This story is part of CNBC Make It’s The Moment series, where highly successful people reveal the critical moment that changed the trajectory of their lives and careers, discussing what drove them to make the leap into the unknown.

Jay Chaudhry never thought he’d run a business, amass a fortune or help popularize an entire industry. Not growing up in rural India, not upon moving to the U.S. in 1980 to study engineering and marketing, not even after landing jobs at tech giants IBM and Unisys.

“I have no background of entrepreneurship in my family of small-scale farmers. So if you asked me, ‘Did I ever think about becoming an entrepreneur in my childhood [or] early years of my career?’ Not really,” Chaudhry, the billionaire founder and CEO of cloud security company Zscaler, tells CNBC Make It.

It took Silicon Valley’s dot-com boom — the wild success stories of tech startups like Netscape — to get Chaudhry thinking in 1996, “Why shouldn’t I start a company?” He made the rash decision to quit his job as an executive at Atlanta-based tech company IQ Software, and his wife Jyoti quit her job as a systems analyst at telecommunications giant BellSouth.

Together, they plunged their life savings — roughly $500,000 — into SecureIT, a cybersecurity software startup they co-founded in 1997. At the time, “maybe less than 5% of Fortune 500 companies had firewalls,” Chaudhry says. “Within 18 months, we had deployed firewalls in about 50% of [the] Fortune 500.”

His timing was perfect: In 1998, Chaudhry sold SecureIT to VeriSign in an all-stock deal worth nearly $70 million. Over the ensuing decade, the husband-and-wife duo founded two more cybersecurity companies and an e-commerce business, each of which got acquired.

By 2007, they were already wealthy entrepreneurs, and Chaudhry — who gets “bored” without something to work on — decided it was time to launch “one big company and put 200% focus on that,” he says.

That company was Zscaler, which aimed to help companies transition away from outdated firewalls and into the cloud era. The couple invested $50 million of their own money, says Chaudhry. Today, it brings in $1.6 billion in annual revenue and has a market value of roughly $30 billion.

Chaudhry’s own net worth is estimated at $11.5 billion by Forbes.

Here, Chaudhry talks about putting his family’s savings on the line to follow his gut, how his upbringing influenced his relationship with money and the advice he’d give someone who wants to quit their job to start a business.

CNBC Make It: What prompted you to stake your entire life’s savings on a startup idea — in an industry that didn’t really exist yet?

Chaudhry: This thing happened because I love to read and I love technology.

In 1996, Netscape had just launched and gone public, and I was fascinated by it. I said, “If [Netscape co-founder] Marc Andreessen could start a company — he was a young guy [right] out of college — why shouldn’t I start a company?”

My wife and I talked a few times, and the more we thought about it, the more conviction we got around it: [Netscape’s web browser] is the way to access information, and it should become popular. But if every company is connected to the internet, that means there will be security risks.

That was my simple thinking. There was no IDC or Gartner study about the market size. It was largely based on what the gut told us.

A gut feeling is one thing. Betting every dollar to your name is another.

It started out with us saying, “Let’s go get venture capital funding.” I had no experience raising funds, and I realized soon that it wasn’t that easy. This was [1996], Atlanta was not a VC mecca and we kept hearing, “Hey, you don’t have any experience.”

We were disappointed, but our conviction was building, which led to me saying, “Why don’t we put our life-savings on the line?”

I didn’t know anything. So, I really didn’t know how big the risk was. I couldn’t quantify it.

How did you make peace with that risk?

After talking back and forth, we asked each other, “What’s the worst thing that can happen?” The company could shut down, we’d lose all of our savings.

The next question was, “Can we find jobs?” There was lots of confidence that we could.

I never had money in my early childhood, so there was never a notion that I must buy A and B and C. Our lifestyle was pretty simple. Our house in Alpharetta, Georgia, was $200,000 — a nice, typical middle-class house at that time — and we didn’t have any fancy cars or fancy payments.

Our only child at that time was going to a public school. There wasn’t a lot of overhead. We said, “Let’s take a chance.”

When a bet pays off, does that success make you more confident to take on bigger risks? Were any of your other ventures as risky as that first one?

The [financial] risk of SecureIT was, like, 1,000 times more than the risk of Zscaler. The amount I invested in Zscaler was a small fraction of my net worth.

But Zscaler was much harder. I put more money in it than all the others combined. I took bigger bets. I hired people more quickly to solve some very hard problems. I wanted to do something big, something lasting.

We were trying to solve a problem that was futuristic. Will it be successful or not? Will the market take off or not? That was all unknown.

So if you asked me the chances of success of Zscaler, there was a much higher risk. Because, with SecureIT, it was fairly obvious that as you connect to the internet, you need firewalls.

What’s your best advice for someone who’s thinking about quitting their job to start their own business?

First, build conviction by learning more about what you want to do. Don’t just do some of the cursory work.

Second, start by putting in your own money. That actually is part of testing your conviction. If you really have conviction, you’ll take a chance on yourself. That also means you’ve done some serious homework, you’re ready, you’re committed.

You can also make decisions the way you want to make decisions. If Zscaler was largely owned by VCs, they probably could have shut it down. It took us a few years to really start getting traction in the market, and VCs can write you off and move on. They say, “It’s one of my 20 investments.”

When you put in your own money, this is the only business you have.

Want to stop worrying about money? Sign up for CNBC’s new online course Achieve Financial Wellness: Be Happier, Wealthier & More Financially Secure. We’ll teach you the psychology of money, how to manage your stress and create healthy habits, and simple ways to boost your savings, get out of debt and invest for the future. Start today and use code EARLYBIRD for an introductory discount of 30% off through September 2, 2024.

Plus, sign up for CNBC Make It’s newsletter to get tips and tricks for success at work, with money and in life.

When Kema Ward-Hopper uprooted her family — and career — to relocate from the U.S. to Costa Rica six years ago, she wasn’t sure what to expect.

She and her husband Nicholas quit their corporate jobs as a research analyst and mortgage broker, respectively, in Houston, Texas, to pursue new careers as entrepreneurs abroad. 

The couple signed a one-year lease on a house in the middle of the jungle on Costa Rica’s Nicoya Peninsula with their daughter Aaralyn not knowing “a single person who lived there” and “how long we’d be able to find work for,” Ward-Hopper, 42, recalls. 

But, she adds, the risk has paid off: Even though she had to leave a career she loved in the U.S., and is earning less than she did while working there, Ward-Hopper says she is “a lot happier” living and working in Costa Rica than she was in the U.S. 

Ward-Hopper now balances four part-time jobs: She’s a health and fitness coach, a Spanish teacher, a host for wellness retreats and, most recently, an author. She self-published her first book, “For my Beloveds: An End-of-life Journal for Guidance & Wisdom,” in September 2023.

“I work 25 hours a week now,” she says. “A heavy week is about 30 hours a week, but that is rare and happens about once a month.”

Last year, Ward-Hopper’s different income streams earned her about $10,500, according to financial documents reviewed by CNBC Make It. 

Meanwhile, her husband Nicholas, 43, runs his own remote logistics business, earning him about $19,500 in 2023.

“Living here has allowed me to explore my passions so that my methods of earning income don’t feel like a job, it just feels like I’m getting to do the things that I love to do, which is to be of service to others,” Ward-Hopper says. “We make less money, but we’re still living pretty comfortably … our money definitely goes further here than in the U.S.” 

Last year, the Ward-Hoppers moved to a three-bedroom, two-and-a-half-bath house in Nicoya. Their biggest expense is rent and utilities, which totals about $628 per month.

In addition to the lower cost of living, Ward-Hopper says she’s found a “more fulfilling, less stressful” career in Costa Rica than in the U.S. because of the country’s relaxed, “family-first” work culture. 

“It’s common to see children in businesses where their parents work, if they’re off from school and don’t have another child care provider, and bosses aren’t so rigid that if you need to take time off from work or step away for a minute if your child is sick or needs something, you’re going to get in trouble,” she says. “As a working parent with young children, that cuts out a lot of stress.”

Ward-Hopper’s son, Nico, was born in Costa Rica in 2020. 

Costa Ricans also value a healthy work-life balance, she adds. The country has a shorter workweek than many other nations, allowing ample time for hobbies, rest and spending quality time with loved ones. 

Many businesses in her neighborhood don’t open until 9 a.m. or later. “You can’t visit a coffee shop and get your morning latte at 7 a.m. like you’re able to do in the U.S.,” she says. “A lot of places are closed on Sundays, too, and holidays, which I’d think helps their employees not burn out.”

Costa Rica is one of the happiest countries in the world, ranking 12th on the World Happiness Report’s 2024 list. 

The Nicoya Peninsula, where the Ward-Hoppers live, is one of the five original Blue Zones. Blue Zones are regions in the world with some of the longest-living people and highest life expectancies, according to longevity researcher Dan Buettner.

Some of the factors that make Nicoya a Blue Zone, Buettner discovered, are the Nicoyans’ diet, which includes fresh fruit, vegetables and whole grains as well as their focus on family and community.

Ward-Hopper would add the Costa Ricans’ attitude toward work to that list. “Work is a lesser part of conversations and how people identify themselves here than in the U.S.,” she says. “That mindset makes it easier to have a fuller, more joyful life outside of what happens at our jobs, which is so often out of our control.”

Want to stop worrying about money? Sign up for CNBC’s new online course Achieve Financial Wellness: Be Happier, Wealthier & More Financially Secure. We’ll teach you the psychology of money, how to manage stress and create healthy habits, and simple ways to boost your savings, get out of debt and invest for the future. Start today and use code EARLYBIRD for an introductory discount of 30% off through September 2, 2024.

Plus, sign up for CNBC Make It’s newsletter to get tips and tricks for success at work, with money and in life.

Parents around the world are debating when to give their children smartphones, as evidence grows that smartphones can have negative effects on the mental health of children.

Research indicates that young people’s mental health was worse the earlier they got their first smartphone, according to a Sapien Labs study published last year, which used data from 27,969 18-24-year-olds across 41 countries.

Some 74% of girls who received their first smartphone at age six said they felt distressed or were struggling, the study found. This decreased to 52% for those who got their first smartphone at age 15.

Meanwhile, 42% of boys who got their first smartphone at age 6 experienced feeling distressed or struggling, and this reduced to 36% for those who received a smartphone at age 18.

But smartphones have become an essential part of everyday life in an increasingly online world and many parents want to give their children devices so they can keep track of their location and stay in touch with them when they leave the home. So how soon is too soon?

Zach Rausch, a research scientist at New York University Stern School of Business and the lead researcher for Jonathon Haidt’s No. 1 New York Times bestseller “The Anxious Generation,” said it’s particularly important to keep smartphones away from preteens.

“We suggest in the book to delay smartphones in the U.S. until high school, so that’s around age 14,” Rausch told CNBC Make It in an interview. “Social media, we suggest delaying until 16, so a little older.”

“Then we suggest phone-free schools from at least kindergarten through middle school in the U.S., but ideally also through high school,” he added.

It comes as grassroots organizations advocating for delaying giving smartphones to kids are gaining traction around the world.

Both Smartphone Free Childhood in the U.K. — which was founded after an “accidental” social media post went viral in February and now has almost 70,000 Instagram followers around the world — and Delay Smartphones in the U.S. cite the research and recommendations of Rausch and Haidt. 

Some academics and scientists remain unconvinced of a causal link between smartphones and poor mental health, however. Earlier this year, psychology professor Christopher Ferguson said the concerns are the latest iteration of recurring moral panic which sees older people “freak out” about new and unfamiliar technology.

For Rausch, the recommended ages of 14 for smartphones and 16 for social media are important for a couple of key reasons.

“The first is that in the United States, we want to get the phones out of middle school because it is the period when you’re in early puberty, which is when you’re just extremely sensitive and insecure. It’s already a hard time, we don’t need to add the phones in there,” he explained.

Middle School typically includes grades six to eight, or children between the ages of 11 and 14 — essentially, the dreaded preteen years.

This is the “period of highest vulnerability during puberty,” Rausch said

He added that in the seventh grade, which is around ages 12 to 13, “there is the most bullying of any grade out there,” and so delaying smartphone use prevents amplifying the issue even further.

Rausch admitted that the ages suggested in “The Anxious Generation” are “in some ways arbitrary,” but that they’re trying to set a “collective norm” that parents can agree on and follow.

“If we can agree upon it together, then it makes it much easier to act,” he explained. “So if we delay until 14, which is a reasonable ask, we can help at least get it out from the younger ages, which is what we’re seeing is that larger and larger proportions of 10-year-olds and six-year-olds already have their own personal device.”

This story is part of CNBC Make It’s Millennial Money series, which details how people around the world earn, spend and save their money.

After graduating from Syracuse University in 2017 and spending three years working corporate jobs in both advertising and marketing in New York City, Vienna Hintze wanted a change.

In 2020, the then 24-year-old struck out on her own and created her own digital marketing agency. In September 2022, she moved to Los Angeles while running her agency from her apartment, but still found herself longing for something more.

“I was kind of losing the why behind what I was doing,” she tells CNBC Make It. “I had moved out to L.A. and something just wasn’t working anymore. I had changed everything about my life except my agency.”

That restless feeling led to a talk with her therapist, who advised her to create a list of what she wanted from her ideal job. Hintze listed out that she wanted to work with her hands, be outside interacting with people and that she’d love to own an old pickup truck.

About a week later, she came up with the idea to start her own flower truck business, Main Street Flower Truck.

Since launching in August 2023, the business has brought in around $44,000 in revenue, plus an additional $4,500 in cash, Hintze estimates.

In May 2024, the now 29-year-old’s business brought in around $16,000 that month alone.

“If you’re living with your happiness, the money will follow,” she says.

Hintze grew up in Long Island, New York, and her father used to commute to his job as a firefighter in a pickup truck. Her mom held many different jobs but her love of gardening was a mainstay, Hintze says. So both the vehicle and the bouquets were familiar to her.

“Growing up, she had the entire backyard blossoming and blooming constantly,” Hintze says. “And some of my favorite memories with my dad was driving around in his little pickup truck.”

She decided to name her company after the street where she grew up, Main Street. But before she could move forward, she needed to obtain a key element: the vehicle.

Since she was still running her digital marketing agency full-time, she had only looked at, and taken test drives in, a few potential trucks. Eventually, by accident, she stumbled upon the perfect one.

When her parents came to visit her and her sister in Los Angeles last May, they decided to drive to Ojai, a small town in Ventura County about two hours outside of the city. While cruising along a back road, she spotted a bright green pickup truck with a for-sale sign in the window that looked similar to the one she drove while in high school.

“This felt very meant to be,” she says.

After the family pulled over to inspect the truck, Hintze wrote down the number on the for-sale sign. She called the owner that same day to ask if she could take it for a test drive. The seller agreed and told her that she had just replaced the engine and the transmission.

“I put my hands on the hood of the truck and just had this thought to the universe saying, ‘Please, if this is meant to be, please give me a sign.’”

The universe delivered: The owner told Hintze that the truck’s name is “Fiona.”

“My name is Vienna and every time I have introduced myself to someone in L.A., only in L.A., they’ve all asked me if I just said ‘Fiona’,” she says. “So that was my sign that, absolutely, I need to buy this truck.”

Two weeks later, she purchased Fiona for around $10,000 using money from her personal savings. Although she felt nervous about whether the flower truck would be successful, she was confident in her ability to run her own business.

“As scary as it was to pull the trigger on the flower truck, I already knew that I was the type of person to be all or nothing on whatever I do,” she says. “I was going to be 100% dedicated to it, and anything it takes to make it work I was going to definitely do.”

In August, Hintze began selling flowers from her pickup truck on the side while running her digital marketing agency. But as business began to pick up for her flower truck, clocking in for her marketing job got harder.

“It was like pulling teeth to get me to log in every day,” she says.

She knew she had a decision to make: Should she focus on running the flower truck full time, or her marketing agency? By February, she made the choice to pour all of her time and energy into growing her flower truck business.

Hintze decided to put her advertising and social media marketing skills to work for her own brand, and saw the results of her efforts pay off a few months later in April.

“I had some content start to go viral which felt incredible because, for the first time, I was marketing my own brand and it was the most authentic thing I had ever done,” she says.

That’s not to say Hintze hasn’t faced unexpected challenges. Since she spends thousands purchasing flowers, she used trial and error to figure out how much she should charge in order for her business to be profitable, for example.

″[At] the very first pop-up, I was selling huge bouquets for $7 and lot of that was just to prove to myself people will buy these bouquets, keep going,” she says. “I definitely lost money that day, but that’s OK.”

Her flower truck business brings in money in three ways, Hintze says: through pop-up events, corporate bookings and video shoots.

At pop-up events, she drives her truck full of freshly picked flowers that she’s arranged into bouquets to various locations around Los Angeles. She sells them for anywhere between $10 for a mini bouquet to up to $75 for larger custom arrangements made right on the spot.

“It’s always really fun to hear about whoever’s receiving the bouquet because then I customize it based on what they might like and their personality,” she says.

In between pop-ups, she books corporate events, parties and weddings. So far, she’s worked with a number of companies, including Lululemon, Free People and Universal Music Group.

For these events, the company or person can choose to rent the truck without flowers; rent the truck with flowers that can be sold to attendees; or rent the truck and pay for the flowers up-front to be given out to attendees for free. For these events, she charges based on how long they’re booking the truck and how many flowers they’d like to purchase.

Since flowers are seasonal, she earns more money in some months than others. Sales tend to fluctuate around holidays like Valentine’s Day and Mother’s Day, she says.

In general, Hintze aims to book at least three events each month, which she says generates enough money to cover her living expenses. However, she tries to keep her personal expenses low so that she doesn’t outspend her earnings.

In May, however, Hintze had the most bookings since she began her flower truck business. She booked 10 events and brought in a little over $16,000 in revenue.

“I’m hoping to keep that momentum up for the rest of the year,” she says.

Here’s a look at the Main Street Flower Truck’s expenses for May 2024:

Hintze’s largest expense is flowers, which totaled about $2,304 in May.

Before a pop-up or other type of event, she swings by her local flower district to choose which flowers looks the freshest and brightest, she says.

“I always gravitate toward wild flowers and things that look very whimsical and fairy-like,” she says. “I think it makes it the most fun-looking setup for the truck.”

She then brings those home and begins prepping them for sale by removing leaves, thorns and cutting stems. Finally, she arranges the flowers into bouquets and places them into various vessels, such as antique milk jugs and vintage buckets.

Her other expenses come from gas and maintaining her pickup truck. While the truck hasn’t needed any expensive repairs since she bought it, occasionally, she’s had to learn how to fix mechanical issues on the fly.

“One of the biggest issues having an older truck is the amount that it breaks down and having to randomly jump start it the morning of a pop-up when you’re set to be there at a certain time,” she says.

Moving forward, Hintze plans on continuing to grow Main Street Flower Truck and help companies and individuals bring their floral dreams to life. But she isn’t thinking about expanding her one-woman business yet.

“People ask me a lot if I’m going to franchise the truck and have a fleet of flower trucks, and I don’t see that being the plan for maybe ever, but definitely for a while,” she says. “My goal is to have the flower truck be as successful as it can as its own standalone, and see how far that can go.”

She hopes that the truck can be featured in TV shows or movies one day. “In the future, I’m hoping that Fiona will have her red carpet moment,” she says.

Hintze plans to continue to enjoying the freedom and work-life balance she’s gained by starting Main Street Flower Truck.

“I’m excited to keep exploring the creativity that I have that was pushed away for so long and really develop a routine out here that keeps my peace of mind at the forefront,” she says.

What’s your budget breakdown? Share your story with us for a chance to be featured in a future installment.

DON’T MISS: Want to be smarter and more successful with your money, work & life? Sign up for our new newsletter!

Want to stop worrying about money? Sign up for CNBC’s new online course Achieve Financial Wellness: Be Happier, Wealthier & More Financially Secure. We’ll teach you the psychology of money, how to manage your stress and create healthy habits, and simple ways to boost your savings, get out of debt and invest for the future. Start today and use code EARLYBIRD for an introductory discount of 30% off through September 2, 2024.