Others choose somewhere between the first two. As long as it helps you to play well is all that counts. Your mental preparation should be to your own taste. Use one that works for you. After preparing yourself mentally for a game, the concentration needed for actual play is another matter.
Basketball is such a fast paced, emotional game.
Decisions are made in split seconds. A player can lose his concentration at anytime. The action on the court. Your coach's plan for that particular game. Once you have your game face, be all business on the floor.