At Brand Autopsy, John Moore quotes Miles Davis

When you hit a wrong note it's the next note that makes it good or bad

I like that and it reminds me of one of the fun things about Improv work.. When doing Improv exercises, people often make mistakes - and it's not the mistake itself that affects the game, but how they respond to the mistake. For instance: suppose their task in the exercise is to say a word and they can't think of one... if they panic at this mistake and bury head in hands, it slows everyone down. If they don't give themselves a hard time and just go with whatever comes into their head, the game moves on.