9 of 9
J.K. Rowling wrote "Harry Potter and the Philosopher's Stone" as a single mum on the dole. Seven books, 4,100 pages and a blockbuster film series later, she's one of the wealthiest authors on the planet -- worth more than $900 million. She's venturing into the adult world with her novel "The Casual Vacancy."
Sep. 25, 2012