Tracy Anderson left her Indiana hometown at 18 with dreams of becoming a ballet dancer in New York.
The dancing career never panned out, but after more than two decades of work, Anderson has established herself as a prominent fitness trainer to the stars.
The pint-sized training guru now presides over a fitness empire worth $35 million, and counts Jennifer Lopez, Gwyneth Paltrow and Kim Kardashian as clients.
Despite her success, Anderson doesn't think of herself as an entrepreneur -- she just wanted her students to get fitter and feel better.
"I didn't set out to start a business first," she said. "I want to help people, and I want to create tools to help people."
Anderson's tools include more than 170 fitness DVDs and five gyms in New York and Los Angeles, with three more on the way.