"Shark Tank" investor and entrepreneur Daymond John wanted to run his own business for as long as he can remember.
"I never knew anything other than wanting to be an entrepreneur," the New York native told Business Insider.
In fact, his entrepreneurial career started in grade school. He would scrape the paint off pencils and customize them with the customer's name for a fee — his market was the pretty girls in his first-grade class.
Since then he's made a fortune launching the clothing line FUBU ("For Us By Us"), and more recently has established himself as a savvy investor on "Shark Tank."