Owning up to your mistakes is tough. We're egotistical creatures by design. But what do you do when it’s true? Muster the courage and admit it, and stop whining about how the world doesn’t recognize your genius. That's the only way to grow as a person and an entrepreneur. For entrepreneurs, this is even more crucial—being able to admit when you're wrong and hearing not just praises but also criticism, even the harsh kind.