Emotional control was the biggest skill I learnt from playing Poker. It's a game where short term winning and losing are unimportant. I learnt to have confidence in my own game, and know that I would (probably) be rewarded (eventually). Knowing that there are factors out of your control (i.e. luck) and becoming comfortable with that, and even getting to a point where you can embrace that (after all, without luck Poker would be no fun). I feel I have taken this skill and adapted it to many other aspects of my life.