“Successful people are successful for one simple reason: they think about failure differently.
Successful people learn from failure, but the lesson they learn is a different one. They don’t learn that they shouldn’t have tried in the first place, and they don’t learn that they are always right and the world is wrong and they don’t learn that they are losers. They learn that the tactics they used didn’t work or that the person they used them on didn’t respond.
You become a winner because you’re good at losing. The hard part about losing is that you might permit it to give strength to the resistance, that you might believe that you don’t deserve to win, that you might, in some dark corner of your soul, give up.
– Seth Godin, Linchpin, 115