I don't know the key to success, but the key to failure is trying to please everybody.

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.

Develop success from failures. Discouragement and failure are two of the surest stepping stones to success.

Failure is simply the opportunity to begin again, this time more intelligently.

The only real failure in life is not to be true to the best one knows.