[rory]

Do not ever play unless you are playing your A game. Simply refuse to do it. Consider it a matter of principle. If you find yourself slipping into your B game, sit out. If you cannot calm yourself down and bring back your A game serenity, quit playing. When you are playing you only ever play your A game. Always. No matter what. No matter how good the game is. No matter what justification or reasons you have. Then you will find that you will stay in your A game for longer and longer and longer. You will become more resilient to being knocked off of your A game. You will feel strong and solid. It will become a manner of honor with you, to be a person who always plays their A game.