6 successful people reveal what they wish they had known in college

Arianna Huffington/Getty Images

Arianna Huffington in college and today.

For many people, their college years are when they learn some of the most valuable lessons of their lives.

But often, it takes distance and some experience in the real world to realize what's important.

Business Insider reached out to six successful people to ask them one question: What is something you wished you had known when you were in college?

Read on to see what they had to say: