#1 good sleep night before, I had a play til your done tournament recently and went in with 4 hrs of sleep, 9pm I was bad tired, by midnight I was seeing funny and missed a few I shouldn't have and between midnight and 5am when I was done... zombie and don't remember much
#2 similar equipment and game practice as said
#3 for me is I don't play at all the day or two before the tournament so I go in kinda missing the game, the added Excitment always helps me