I think that after gambling for some time you somehow become "skilled" at knowing when to stop. You develop a feel about it like a 6th sense that tells you: "stop now you idiot". I dont want to call it skill tho, but it's something strange. It doesn't mean you will win more, just lose less.
True, I never felt anything like that, but I can't keep what I'm feeling. Because sometimes when I do gambling, my mind was already penetrated by greed. So it is less influential
In that case you should set a limit to your self if you are not still wwell disciplined in playing gambling.
In that way you will reduce the possible amount that you may loss during the game.
And one more thing, Don't try to be over cotrol by greed as greed will mostly lead you to more losses rather than winning.
Good luck in gambling mate.