You build on failure. You use it as a stepping stone. Close the door on the past. You don't try to forget the mistakes, but you don't dwell on it. You don't let it have any of your energy, or any of your time, or any of your space. ↗
John Howard Davies was not a very human person... if you made a mistake of any kind, any sort of pause in speech, he would treat you rather as if he was a schoolmaster. ↗
When I stopped touring in the early '80s for a few years, it was a mistake looking back. I lost touch with my audience in a way and I think that was a bad career move. ↗