the worst moment came when I was not able to control myself, I bet all the money I got, which I should have won and finally lost big. This as an experience if we have won it might be better to go home and play again next time.
Most of us had this kind of experience in gambling, that didn't control themselves, they let the greed consume them, and then all of their money was gone for that day. Worst thing mostly could happen to us when we are playing gambling, I'm sure of that, though we have different definition of how worst it is could be. We are human, and the majority of the population worship the money, it is the thing that is important to them.
Therefore you can't tell that everyone could just quit after he won in gambling, it depends on how he is going to take that, either he will see it as a positive sign to continue, or the negative sign to quit and try again tomorrow.