There's also Sylvester Stallone. He was broke and homeless at one point in his life. But he had a script for 'Rocky' that he believed in. He refused to sell the script unless he could star in the movie. His tenacity paid off. 'Rocky' became a huge hit, and Stallone went on to have a very successful career in Hollywood. He really turned his life around from being at rock bottom.
Sure. J.K. Rowling is a great example. She was a single mother on welfare, living in poverty. But she had this amazing idea of the wizarding world of Harry Potter. Despite numerous rejections, she persisted. Eventually, her books became a global phenomenon, and she went from rock bottom to one of the most successful authors in the world.