I prepare for any competition (from pub quizzes to poker to playing 10-pin bowling against my Dad) the same way - get clothes ready & ironed, wash, shave... basically get everything right before I go.
My Dad noticed me doing it before a big pub quiz (they used to be quite serious for good money, pub v pub back home). He was pleased as that's how he prepared before a big football game (he played proffessional) - I think that's the first time he noticed something where I took after him (I'm crap at football

).
I'm glad you've asked this becasue I've noticed sometihng - when I prepare this way I'm putting on my 'game face' - I've not been doing it some nights before Cincins & not played as well.
I maybe need to think more about getting my mind straight for the game...