As you know that you need to stop and leave the game? How can you feel this moment. I almost always lose their money because they can't learn when to leave the game. I'm not sorry to lose. I have a lot of money not to lose, but I can't keep the winnings if I'm lucky.
In my own experience, to know how to stop while playing gambling, you should know first to limit yourself or you should have a self control for you to have a less chance to lose a lot of money in gambling and more earnings. Being greedy in playing gambling should ve avoided because if you are greedy it is very hard for you to stop playing.