Whether you win or you lose, you need to be able to do two things.
First, appreciate your performance – which means giving an appropriate value to your role. Because whether you win or you lose this time, the outcome of the next challenge will be based on how well you understand what went well and what did not go as well.
Second, extend a hand to your opponent – no matter if it’s a person or a situation. Because whether you win or you lose this time, you ought to be able to recognize that some things are out of your control and deserve your unconditional respect.