1. Jon Hamm Jason Merritt / Getty Images At 27, Hamm couldn't find any work and was dropped by the William Morris Agency. He vowed to quit acting if he couldn't get his career rolling by 30. Fortunately, he landed a role on the NBC drama Providence at age 29. 2. Oprah Winfrey Frazer Harrison / Getty Images Oprah bounced around various Baltimore news stations, including one that fired her for getting too emotionally invested in stories. Her demotion to daytime TV proved a blessing in disguise, and by 30 she had the highest-rated talk show in Chicago. 3. Harrison Ford Ethan Miller / Getty Images Struggling to make money acting, Ford supported himself as a carpenter. A chance gig building cabinets for George Lucas led to a small part in American Graffiti and the role of Han Solo. 4. Tim Allen Angela Weiss / Getty Images In his mid-twenties, Allen spent over two years in federal prison for selling cocaine. The experience forced him to turn his life around and revive his stand-up career. 5. Kristen Wiig Jason Merritt / Getty Images Wiig spent her twenties working every odd job imaginable, from selling peaches to babysitting to drawing bodies of plastic surgery patients. SNL finally noticed her work with the Groundlings and hired her at 32. 6. Andrea Bocelli Michael Buckner / Getty Images To pay for singing lessons and law school, Bocelli moonlighted as a piano bar performer until he was discovered by Luciano Pavarotti at age 33. 7. Ang Lee Imeh Akpanudosen / Getty Images After earning his master of fine arts, Lee spent six years as a stay-at-home husband while his film career stalled. Ashamed, he briefly considered a career in computer science until his wife, the family's sole earner, urged him to continue pursuing his dream. 8. Don DeLillo Timothy Hiatt / Getty Images To focus on becoming a "serious" writer, the award-winning novelist walked away from a cushy advertising gig and moved into a $60-a-month apartment, where his main expense was paying the phone bill. He published his first novel at 35. 9. Walt Disney R. Mitchell / Getty Images At 24, he had Oswaldo the Rabbit, his first successful cartoon character, stolen from him by Universal Studios. At 25, MGM told him no one would ever like Mickey Mouse. At one point in his twenties, Disney was so poor that he resorted to eating dog food. 10. Suze Orman Leigh Vogel / Getty Images Orman spent most of her twenties working as a waitress. After an attempt to open her own restaurant bankrupted her, she became interested in finance and pursued a career as a broker. 11. R.A. Dickey Jonathan Daniel / Getty Images After a successful college career, Dickey suffered so many arm injuries he couldn't even turn a doorknob without significant pain. Desperate to stay in the game, he began experimenting with the knuckleball, worked his way back into the major leagues, and won the National League Cy Young Award at age 37. 12. Zach Galifianakis Frazer Harrison / Getty Images While trying to jump-start his standup career, Galifianakis spent a large portion of his twenties as a busboy in an upscale Manhattan strip club. 13. James Murphy Rachel Murray / Getty Images At 22, the LCD Soundsystem front man turned down a gig writing for Seinfeld. He was in and out of various punk bands for several years before founding DFA Records at 29. 14. Sylvester Stallone Kevin Winter / Getty Images While shopping Rocky around Hollywood, Stallone was so poor he tearfully sold his dog Butkus for $25. Once Rocky was purchased, he bought the bullmastiff back for $3,000 and even gave the buyer a small part in the film. 15. Steve Jobs Justin Sullivan / Getty Images Although Jobs was a millionaire by 23, he became so disliked at Apple by the end of his twenties that his own company fired him. Jobs credited this devastating setback with helping him enter "one of the most creative periods" of his life. 16. Lucille Ball Keystone / Getty Images During her twenties, Ball was known as the "Queen of the 'B's" thanks to her frequent roles in B-movies. Her agent recommended she find a new career, and it wasn't until 40 that Ball became a household name on I Love Lucy. 17. James Dyson Bruno Vincent / Getty Images Relying heavily on his wife's income, Dyson spent the majority of his twenties failing to sell his vacuum cleaner designs to major manufacturers. At 39, he sold his first U.S. patent, allowing him to open his own manufacturing company. 18. Tim Thomas Elsa / Getty Images Thomas bounced around several amateur and international hockey leagues before becoming a starter during 2006–2007 season at age 30. In 2011, his Game 7 shutout against Vancouver helped deliver a Stanley Cup to Boston. 19. J.K. Rowling Ben Pruchnie / Getty Images By the end of her twenties, Rowling was a divorced, unemployed single parent on welfare. After being rejected by eight publishers, Harry Potter and the Philosopher's Stone was published right before her 32nd birthday and quickly became a best-seller.