If she's the right age, Teach her The Game. It's a brain virus game.
Rule number 1 of The Game, you can not think about The Game. When you think about The Game you lose.
Rule number 2, when you think of The Game you have to say that you've lost The Game. Ideally loudly and publicly.
Rule number 3, after losing the game you get 30 minutes grace period to stop thinking about it before The Game starts again.
Rule number 4, once you have learned about the game you may either play the game or cheat.
Murica!