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.
“I may not be the favourite candidate of some people within the Republican establishment, but the voters made a decision.”
“Put your consumers in focus, and listen to what they're actually saying, not what they tell you.”