In 2016, when Mikaila Ulmer landed an $11 million deal with Whole Foods to sell her Me & the Bees Lemonade in 55 of its stores in four states, that was just the beginning of her financial success. Today, the 14-year-old entrepreneur’s beverage is now also being sold by restaurants, food trailers and natural food delivery companies.

In a 2017 interview with CNBC, Mikaila said her best money advice is to automate your finances. What the teenage millionaire means is to use online technology to track numbers and share data to keep financial information easily accessible and in check.

People who are looking to become rich can take a cue from stars who know how to diversify their income streams — like Camila Cabello. The 23-year-old singer got her start on “The X Factor” television show in 2012 as a member of the group Fifth Harmony, which she left to become a solo act in 2016.

Since becoming a solo act, Cabello has collaborated with other artists, released a No. 1 album, toured solo, done a modeling campaign for Guess and took a role in a film adaptation of “Cinderella.” According to Celebrity Net Worth, Cabello has a net worth of $14 million.

Liza Koshy, who cut her digital teeth on the now-extinct Vine, is another star who knows how to earn income from various ventures. She made Forbes’ 2019 30 under 30 list.

Koshy has two successful YouTube channels with millions of subscribers. She’s had her share of sponsored content opportunities and has been hired for commercial ads. She snagged a role in Hulu’s “Freakish” and played a part in Tyler Perry’s “Boo! A Madea Halloween” movie. Plus, Nickelodeon hired her as the face of its “Double Dare” reboot.

JoJo Siwa is another famous female who rakes in the money from many angles. This 17-year-old is known as a dancer, singer, reality television star, model and actress. Her net worth is $12 million, according to Celebrity Net Worth.

In addition to gaining income from her many talents, the teen’s YouTube channel has more than 10 million followers. She also has lucrative licensing deals with Nickelodeon and J.C. Penney.

The earlier you start making money, the more time you have to build your wealth. Even if you don’t know exactly what you want to do, the sooner you get going, the more time you have to grow your income.

These under-25 Hollywood actresses — and one model — have reached millionaire status by starting on their careers between the ages of 2 and 8.

Chloe Grace Moretz, age 23, got her start as a Hollywood actress in 2005 when she was around 8 years old. Moretz currently has a net worth of $12 million, according to Celebrity Net Worth.

Gigi Hadid, 25 years old, already has a net worth of $29 million. She started her modeling career at the tender age of 2 when she was discovered by fashion brand Guess.

Twenty-two-year-old Elle Fanning got her start making movies for the big screen at age 3. She currently has a net worth of $6 million.

Elle’s big sister, Dakota Fanning, age 26, has double the net worth of her little sis, at $12 million. Dakota got her start in movies in 2001, around age 7.

Even though 23-year-old Kylie Jenner is well-known for her Instagram presence, her cosmetics company and her famous family, her place on this list isn’t about any of those. Instead, it’s all about her real estate savvy and knowing a good investment when she sees one.

Jenner has owned five houses, making her first purchase at 17, according to Insider. In 2015, she bought her starter house in Calabasas, California, for $2.7 million. She renovated it and sold it for $3.15 million in 2017. In 2016, while she owned the Calabasas home, she purchased a mini-mansion in Hidden Hills, California, for $6.03 million. Jenner sold the property for $6.7 million in 2018.

A few months after Jenner purchased the Hidden Hills mini-mansion in 2016, she added a $4.5 million home to her real estate portfolio — one that was located right next door. She originally planned to use it as an office but flipped and sold the property a mere five months later for $5.26 million.

In September 2016, Jenner bought another mansion, spanning 13,000 square feet for $12 million. She currently owns that property.

In 2017, Jenner purchased a vacant lot next to her home for $5 million. About 10 months later, she sold it for $5.35 million.

Last, but not least, Jenner is co-owner of a $13.45 million Beverly Hills mansion with her daughter’s father, Travis Scott.

For all his crazy antics, 23-year-old Jake Paul certainly knows how to leverage the power of YouTube to gain millions of followers, billions of views and millions of dollars. He ranked No. 2 on Forbes’ 2018 list of highest-paid YouTubers, with earnings of $21.5 million.

It might seem like Jake Paul has arrived in the financial sense, but his advice is to keep working hard even once you’ve made it. This is especially true in his industry because digital stars have to churn out new content to stay relevant.

Churning out new content is something pint-sized YouTube star Ryan, of Ryan ToysReview, knows a lot about, too. Ryan makes videos every day, according to Heavy. Ryan topped Forbes’ 2018 list of highest-paid YouTubers, raking in $22 million.

Endorsement deals can pay out handsomely, and they’re not just for the celebrity set. With a great brand, hard work and perseverance, you can also get paid for sponsored posts on Instagram.

Fashion model Bella Hadid, age 24, earns $86,300 per sponsored Instagram post. Twenty-three-year-old Eleonora “Lele” Pons, a lifestyle Instagram influencer, makes $144,000 per Instagram post. And then from Instagram, you might be able to work your way up to even better deals.

Singer-songwriter Shawn Mendes earns his millions from his world tours and music sales. But he also takes advantage of lucrative endorsement deals to increase his bottom line. The famous 22-year-old has deals with Armani, SmileDirect and Calvin Klein.

Other under-25 millionaire celebrities who have netted lucrative endorsement deals are Kendall Jenner, who’s a fashion model and TV reality star on her famous family’s series, “Keeping Up With the Kardashians.” Calvin Klein is just one of the high-paying endorsement deals 24-year-old Jenner has scored.

It all started in 2011 with a $25 bath bomb experiment the sisters took on for an upcoming science fair. The experiment snowballed into a business, where, at one point, the sisters were making 20,000 bath bombs a month out of their parents’ basement.

Now Caroline, 18, and Isabel, 19, have a thriving business, Da Bomb, which generates $20 million in annual revenue. Besides bath bombs, the company makes and sells bath salts, body scrubs and bath shots. The products are sold at stores like Ulta, CVS and Target, and the sisters even have a licensing deal with Mattel that allows them to sell Barbie-branded bath items.

From the beginning, the sisters have wisely reinvested the money they earned back into their business — after paying their debts and themselves first. By reinvesting the money you earn back into a company, you can help it grow without having to seek out new capital.

To be able to really break out and start making some serious cash, you won’t be able to do everything yourself. Instead, you’ll need to delegate some of your responsibilities to people you can trust.

And that’s exactly what brothers Brandon Martinez, director of sales, age 14, and Sebastian Martinez, CEO, age 12, do to experience more success with the sock company their mom helped them found: Are You Kidding Socks. They defer to and look to their mom for guidance — in essence, they delegate the more difficult decisions and actions to her.

It all started when mom, Rachel Martinez, watched a story about another kid entrepreneur who created her own product. The savvy mom knew Sebastian had a love for socks, so she asked him if he wanted to start designing socks for sale. Sebastian accepted, and the business took off.

Two years ago, in 2017, the boys’ mom reported the company made $250,000 in sales, doubling their profit from the previous year. If things have been progressing at the same pace, these two youngsters are likely gaining on millionaire status, if they’re not already there.

From a young age, Moziah Bridges had a love for fashion and enjoyed dressing well. When he decided he wanted to start making his own bow ties, his grandmother taught him how to cut and sew fabric.

From there, his mother, Tramica Morris, helped him build a business around his passion — designing, making and selling the bow ties for profit. And Mo’s Bows was born.

In 2013, Mo and his mother were guests on the popular TV show “Shark Tank,” where he gained Daymond John as a mentor. John’s advice helped him make hundreds of thousands of dollars in sales.

In 2017, when Mo was 15, Business Insider reported that he signed a seven-figure, one-year deal with the NBA to produce ties for all 30 of its basketball teams.

Mo’s mother taught the young entrepreneur to be smart with his money by involving him in the bookkeeping process. Even if you are making a ton of money, it’s important to be wise with how you budget and spend it.

Langston Whitlock, 18, co-founder and CIO of the company that created ride-sharing app SafeTrip, knows what it takes to keep being successful: Stay focused.

SafeTrip, which caters to the homeless and the elderly, allows individuals, caregivers and medical personnel to book medical transportation via the app. The company earned $3.4 million in revenue last year, according to Entrepreneur.

Whitlock, who will graduate from high school in 2020, puts in full-time hours at the company. His goal is to take care of his mom and provide her with everything she needs, which means he needs to keep making his company a success. To that end, he is committed to staying focused and doing whatever it takes.

A couple of other young entrepreneur millionaires, Matt Salsamendi, 22, and James Boehm, 24, also believe that staying focused can lead to financial success.

The two met by way of the popular game Minecraft. Matt was hosting servers for his friends so they could have their own gaming server and their own version of the game. James became a customer and then asked Matt if he could help his business grow.

The two partnered up, moved away from hosting to a video game streaming service, and grew their company Beam into a venture worth almost $5 million. Matt even dropped out of high school in the ninth grade to keep the rapidly growing company going.

If the two hadn’t stayed focused on their goals, they never would have grown a multimillion-dollar company, which ultimately was acquired by Microsoft and is now renamed Mixer.

According to 21-year-old Erik Finman, if you’re willing to invest in the digital asset bitcoin and stick it out through volatile price swings, you can become very, very wealthy in the next 10 years.

He likens a bitcoin investment to early investments in companies like the now multibillion-dollar empire known as Amazon. However, seasoned investor and billionaire Warren Buffett is a big opponent of the cryptocurrency.

Finman earned his money by investing in bitcoin and other digital assets starting in his tween years, which allowed him to become a millionaire in his late teens. His current wealth from bitcoin holdings was estimated at $3.6 million in May 2019.

Benjamin Kapelushnik, aka Benjamin Kickz, is a 21-year-old entrepreneur who sells rare sneakers to celebrities, such as DJ Khaled, Drake and P. Diddy. Known as the Sneaker Don, Benjamin claims everything he does in his business is a secret. Somehow, he’s able to get his hands on the rarest of sneakers before they’re even released.

He buys the sneakers in bulk and sells them for a minimum 40% profit margin. In some cases, the Sneaker Don can snag shoes for such a great price that profit margins might be much higher — more than 1,000%.

When selling or reselling goods, going for the highest profit margin possible can really increase your bottom line. Just don’t price your offer so high that you drive away current and potential customers.

Now that you’ve learned the financial secrets of 25 millionaires under 25, here are some additional tips to help you reach $1 million in net worth before you turn 30 — or whatever your next milestone age happens to be.

When you start making headway on your financial goals or strike the jackpot on an investment, resist the urge to splurge. Instead, opt to be frugal. When you celebrate, scale it back — way back. The less you spend now on things that won’t give you a financial return — like new cars and fancy vacations — the more you’ll have to invest later.

If you can find something to do on the side that’s worth your time, why not do it? Think of earning $1,000 extra per month for a few extra hours per week of your time. In a year, that could really add up. Plus, the great thing about side hustles is that they can turn into a full-time income or even more than what you’re currently making.

It’s true that knowledge is power, but it’s also true that knowledge can help you earn wealth. The opportunities for online learning are abundant. Consider looking for classes focused on solid wealth-building strategies. Plus, there’s no shortage of valuable reading material on the subject — available either digitally or by sitting down with an old-fashioned book.

Unless you’ve found a way to passively earn unlimited amounts of income, it’s smart to incorporate wealth management tools into your routine. Look for tools that can help you analyze, calculate and track your money. Plenty of great free options exist online. Without these helpful tools, you might find it harder to make true financial progress or gain the maximum benefit from your money.

If you are the average of the five people you spend the most time with, then it’s time to surround yourself with people who are already doing what you aspire to do — make lots of money. Having powerful and rich people as your friends can benefit you in all sorts of ways — from asking for advice to getting an introduction.

If you’re in your 20s, you can afford to be more aggressive with investments because you have time to recoup your losses if things don’t turn out as you’d hoped. Don’t risk it all, but do consider investing a portion of your money in a higher-risk stock that you’ve done the research on. The payoff could be well worth it and put you years ahead financially.

If you set a savings goal of 10% of your net income each month, increase it over time. When you get a raise, increase your savings contributions accordingly. When you pay off a debt, don’t acquire more debt. Instead, start putting the old payment toward savings or investments. You might be surprised how much more you can sock away when you make it a priority.

No matter what, you’ll experience a financial challenge at one time or another. Perhaps you’re doing great with your savings goals, but then you have a financial emergency that wipes out one-third of your account balance.

Instead of giving up or just going forward from there, make it a goal to pay yourself back as soon as possible. One of the keys to financial success is to be willing to overcome obstacles no matter the sacrifice.

Although it might seem trite, eating healthy, exercising and getting enough rest is important to your financial success. A well-functioning body and mind will help you stay on track and committed to working tirelessly toward your goals.

Many studies show that a positive outlook can benefit your mood and your motivation — even when you’re feeling anything but. On the flip side, if you choose to focus on negative thoughts and feelings, you risk feeling pessimistic and unmotivated, which might hinder your financial success.

You should always have at least one big goal you work toward each day, even if there’s no way you can reach it that same day. Without goals, it’s nearly impossible to navigate toward financial success.

Focus on the goal and keep working toward it until you achieve it. Once you complete a goal, set another one and work consistently toward achieving it. Eventually, achieving these big goals can help you reach the financial success you’ve been dreaming of.

Hold yourself to a higher standard than what’s expected of you and you’ll gain the trust and respect of others. Trust and respect can translate into positive benefits, such as more clients or higher-paying opportunities — and ultimately, more money.