I'm self destructive, just look at my games. Most of the time my brain thinks the position is 3 or 4 moves ahead and I move my attacking pieces on covered squares and lose the pieces, because I see lines where in 3 to 4 moves I can actually make those moves, but something in my brain triggers that those 3 to 4 moves have already happened and I blunder pieces for no reason...
Self-Destructive Players

I've noticed that when I started playing tournaments here, my performance has dropped. I think it is because I cannot remember all of my plans when I have more than ten games going at once. I've tried to "speed-up" some games that I feel I have a winning position and slow-down games where I need to do more analysis.
When going against players that can find something to do you might find your pieces to be misplaced quite often.