Don't get yourself in certain circumstances or instances, because it's not a good feeling to be sitting in that chair where you've got 12 people that are in control of your life. You have an opportunity to be in control of your life for yourself by the decisions that you make.
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.