6 people who became millionaires by 30 reveal their keys to success

Scanpix/Heiko Junge/via REUTERS Do you ever think to yourself, "It must be nice," when you hear about the glamorous lives and million-dollar deals of top business leaders like Richard Branson and Bill Gates? Well, as nice as their lives may be, being nice has very little to do with this level of success — as you'll see in a moment as six people who become millionaires by age 30 reveal their keys to success. Richard Branson says to dream big. JP Kim/Stringer/Getty Images Virgin Group founder Si...