In a speech to the schoolchildren of America, President Obama mentioned Harry Potter and J.K. Rowling to remind kids of the power of perseverance. As The Times Online reports: Some of the most successful people in the world are the ones who’ve had the most failures. JK Rowling’s first Harry Potter book was rejected twelve times before it was finally published. Michael Jordan was cut from his high school basketball team, and he lost hundreds of games and missed thousands of shots during his career. But he once said, "I have failed over and over and over again in my life. And that is why I succeed." These people succeeded because they understand that you can’t let your failures define you – you have to let them teach you. You have to let them show you what to do differently next time. If you get in trouble, that doesn’t mean you’re a troublemaker, it means you need to try harder to behave. If you get a bad grade, that doesn’t mean you’re stupid, it just means you need to spend more time studying.