Australian fitness mogul Kayla Itsines has built an exercise empire over the past decade, gathering 15.6 million Instagram users tuning into his content.

The influencer first tasted success with her 12-week “Bikini Body Guide” (BBG) fitness program—a business model she founded and bootstrapwhich launched him to self-made millionaire status at just 22 years old. The serial entrepreneur then rebranded the venture into a personal training platform Sweat Appwhich has gained an online community of 50 million members. And just six years later, Itsines sold Sweat to fitness platform iFIT for $400 million.

Many expect entrepreneurs who sold their companies for millions to retire early and live entirely off the wealth from their sales. But Itsines is not one to rest on his laurels; instead of kicking, the builder strategic how to make it last. He put money into a whole host of promising ventures—and one unconventional investment turned out to be so successful that even he was surprised.

“The first thing that made me money that I was so excited that I bought was a gas station,” Itsines recently revealed during an interview with The School of Hard Knocks. “And I was like, ‘Wow. For all the millions of dollars, the rent from the gas station looks pretty good.'”

For those looking to replicate his financial success, Itsines’ advice is luckily much simpler than selling a $400 million company in your 20s. Instead of hedging all their bets on one major investment, people should spread their wealth across different industries and businesses, Itsines recommends.

“Don’t put all your eggs in one basket,” Itsines continued. He advises that everyone should “diversify your wealth, because one day the internet may shut down and it will disappear.”

luck Sweat reached out to comment.

Investment advice from CEOs: Put away the Birkin bag, and

Itsines had the right idea when he pursued his idea of ​​building a diversified asset portfolio early on; other investment moguls, from prominent amounts investor Mohnish Pabrai to “Oracle in Omaha” Warren Buffettechoes the same strategy. The 95-year-old Buffett is starting to accumulate his impressive net worth when he was a young, badass businessman—and he’s now sitting atop a $143 billion fortune.

“Start young,” Buffett said at the time an annual Berkshire Hathaway meeting in 1999. “We started making this little snowball at the top of a very high hill… We started at a very early age to roll the snowball down, and of course…

Nasdaq CEO Adena Friedman also believe that aspiring investors should learn more about financial strategy simply by trying. Putting money into stocks for the first time can be intimidating—but the executive says there are plenty of ways to get even the most jaded professionals in the door.

“Learn by doing – with a small amount of money, or even on platforms where you don’t have to use real money,” Friedman SPOKE CNBC Do It at the Fortune Global Forum in 2024. “As you become more involved and more educated, you can start taking more risks … and then gain more confidence.”

Some financial legends warn new investors of purchases that will swallow their money. Peter Tuchman, an iconic NYSE floor trader and the “Einstein on Wall Street“Witnessing what investments really hold after four decades of career experience navigating market crashes warns against the idea that the purchase of a unique watch or exclusive Hermès Birkin bag will lead to a large payment down the line—instead, people should put their money into the companies that make the products.

“One of the most important things is to invest in stocks and not things,” Tuchman said in a video Posted on The School of Hard Knocks last year. “Most of the things we buy depreciate in value the minute you buy them.”