Its not too much you can say because it all depends on the person, I personally make sure I get good sleep especially after Day 1 if you go on to Day 2. Eat a good breakfast and just remember your game. A few days before a big tourney for me I'll go over some strategy videos, get in the right state of mind, don't forget live poker is about reading people! Always pay attention and don't get distracted by the lights in the casino lol.

GL man