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.
“Polling is merely an instrument for gauging public opinion. When a president or any other leader pays attention to poll results, he is, in effect, paying attention to the views of the people. Any other interpretation is nonsense.”
“Anyone who has a continuous smile on his face conceals a toughness that is almost frightening.”