It's a trap when you have no acceptance in yourself. And that's why it's one of the first move that most gamblers need to have. When we've lost, we just accept it so we can move on and look forward to another day. Because if not, you're right that we'll be trapped on it and that's where the worse things could happen. As you have said, more losses could come and you'll lose grip to yourself because you'll start to become emotional and that's going to make you have difficulty in quitting because the losses have added on top of your recent. And what you want to do is to recover it all which is unlikely to happen.
Funny but most of the time when I'm in such situation while in the winning side, i prefer to push for more, though the amount that I use is not that much and capable to let go, but I only realize my mistake when I already lose back whatever I almost earn, but just like what I mentioned, that amount is not that huge and not really hard to forget as it's set for killing some time and enjoy the game.
I understand why we're pushing for more when we're in that winning side. That's because we feel lucky and likely to win more and that's the reason why we want to keep on doing it. And we're in the adrenaline rush during that time and that's the reason why we're trying to make something out of that momentum and if we're winning at that time, we think that we should go for more. But in the end, we realize that it's not as good as what we're thinking and we're only losing it because we didn't take the profits that should have been for us already.