That story is about Sylvester Stallone.
Before he became a global icon, Stallone went through a stretch of life that was genuinely brutal. He was broke in New York, bouncing between cheap rooms and bus stations, and even ended up homeless at points. At his lowest, he sold his dog—Butkus—for around $40 because he couldn’t afford to feed him.
He also faced constant rejection in Hollywood. Casting directors repeatedly told him he wasn’t “leading man” material, especially because of his facial features and partially paralyzed mouth (the result of a birth injury). One of the most repeated insults he heard was that he was “too ugly” to be a star.
But the turning point came when he wrote the script for Rocky. Studios loved the story—but didn’t want him in the lead. He refused to sell it unless he got the role. Eventually, they agreed.
He bought his dog back, and Rocky (1976) went on to become a massive hit, winning Best Picture and launching one of the most iconic careers in film history.
That’s why Stallone is often used as the classic example of persistence in Hollywood—someone who was dismissed entirely, then ended up defining an era of action cinema.