Down to 10 people in a 50 person tournament. Blinds are $1K and $2K. I am on the button. I look at my cards and am pleased to see pocket A\'s. I raise to $10K the small blind calls everyone else folds. Flop comes Ks, 7d, 10d. Small blind checks I go all in for another $6K and he calls. He shows As Kd. I am way ahead. The turn comes a another diamond and I am afraid of him now catching a diamond flush. Sure enough the river puts 4 diamonds on the board. I am upset and angrily toss my aces into the pot. Then a friend of mine, playing at the same table grabs my aces and turns them over in front of me. I was so upset by seeing that he caught the K high flush that I didn\'t even realize I had the A of diamonds and would have won had I not tossed my cards in the pot. I am not a newbie amateur but was definitely off my game right there. I wasn\'t beat by bad luck or cards I was beat by myself. Moral of the story is to keep your cool and pay attention to your cards.