Always have a plan and believe in it. I tell my coaches not to compromise. Nothing good happens by accident.
Winners bring reality up to their vision. Losers bring their vision down to reality.
Football players win football games.
Winning and losing are both very temporary things. Having done one or the other, you move ahead. Gloating over a victory or sulking over a loss is a good way to stand still.
Remember your six P's - Perfect Practice Prevents Piss Poor Performance.
Don't bemoan your fate. Everybody's not going to be dealt the same hand. Everybody's going to go through tough times.