When I was doing heavily gambling I was in similar situation whether I was stopping at some profit or at loss but was coming back after a while. This is gambling which doesn't let you stay calm in either case you will try to recover or make more profit. In my opinion large number of players go through similar situation like me.
If you will win you will try to win more and if you loose then you will again gamble to recover your loss and that is a human nature and that makes him to go for gambling again and again as most of the gamblers lack self control which is very important in gambling.