Who knows best when it comes to investing? None other than Warren Buffett, the legendary “Oracle of Omaha” and CEO of Berkshire Hathaway, Inc.

Buffett has an estimated real-time net worth of $141.7 billion as of Dec. 17, 2024, according to Forbes. It’s clear that this business magnate knows more than a thing or two about how and what to invest in. But sometimes, investing doesn’t even involve money.

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What might be the greatest investment of all? According to Buffett, it’s yourself.

Stocks, bonds, index funds, mutual funds, real estate, and more: all investments that may result in profit. However, one common thread that they all share is they can all fluctuate in value due to market volatility or inflation.

Meanwhile, investing in your skills and education is priceless and can propel you to new personal and professional heights.

“Whatever abilities you have can’t be taken away from you. They can’t actually be inflated away from you,” he shared at an annual Berkshire Hathaway shareholders meeting. “The best investment by far is anything that develops yourself, and it’s not taxed at all.”

Here are three ways you can invest in yourself to build wealth, according to Credit Karma:

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Whether it’s going to get your bachelor’s or master’s degree, completing a certificate program or attending seminars, investing in your education is one of the best ways to boost your career.

Further education will likely make you more competitive in the job market and could improve your career prospects.

Education is key, but so is real-world experience in your chosen field. You can even start by volunteering or getting an internship in your field of interest.

Working in the field before landing a full-time job can help sharpen your skills and make you a more competitive candidate.

Self-care means paying close attention to your well-being. Whether it’s spending time with loved ones, meditating, daily journaling, or exercising, a healthy body and sound mind are crucial to being able to effectively invest in your skills.

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This article originally appeared on GOBankingRates.com: Why Everyone Should Follow This Genius Investing Advice from Warren Buffett