6. Richard Branson
Company: Virgin Group
As a child, Richard Branson struggled with dyslexia throughout his school years. After finding difficulty adjusting to numerous schools, he dropped out at the age of 16 to start his own youth culture magazine, called "Student." After moving to London in the mid-1960s, Branson developed his idea for a mail-order record company to help fund his magazine efforts, which he named Virgin. Branson's current empire include an airline, drinks manufacturer and dozens of other ventures.