When we got winning many times, that can lead us to spend more and more because winning is satisfying and we want to have those feelings. I think that is happening to many gamblers and we end up losing all of the money and can not recover the losing money. So remember, when we can win for some rounds, taking a break will be the way for us to lowering the tension because of the winning before. By doing that, we can think clear of what we will need to do and save the winning money.
I read a scientific study where it was argued that a person experiences the strongest emotions when he has almost achieved a result. In gambling, such situations are quite common - the fall of two 7s when three are needed, etc. Human biology forces him to overexert himself and continue hunting when the prey is almost caught - the same happens in gambling. That is why many gamblers cannot stop in time. Only after this do the emotions associated with winning have a meaning.