First i put an amount limit for my gambling habbit after a first and second level of my limit i will stop and try it again nextime that means im not luck to that day.
You'll know it with your instinct, the loses that you are having every time you try gambling is enough for you to stop playing gambling, you are too numb if you are going to insist to yourself that you have to continue playing gambling because nothing will happen if you will quit it. Sometimes giving up the things that don't benefit us is better, yes it is easy to earn money in gambling but that is only possible if you are winning.