What 9 successful people would tell their younger selves about money

We sometimes forget that even the wealthiest, most successful people weren't always on top of the world.

"Every master was once a disaster," T. Harv Eker writes in his bestseller, "Secrets of the Millionaire Mind." "No one comes out of the womb a financial genius. Every rich person learned how to succeed at the money game, and so can you."

Business Insider asked CEOs, self-made millionaires, and bestselling authors what they wish they'd known about money from the get-go.

After years of experimentation, successes, and failures, here's the financial advice nine successful people would give their younger selves: