How many doors are you willing to knock on to reinvent your career? Sara Blakely has knocked on a lot of them.

After a brief stint at Walt Disney World, she sold fax machines door-to-door for seven years. Frustrated by having to wear pantyhose in the hot Florida climate on her sales route, she experimented by cutting off the feet of her pantyhose while wearing them under a new pair of slacks. Continue reading How many doors are you willing to knock on? →