The best thing to do is to mind the way you gamble with your hard earned money, by avoiding the use of money you can't afford to lose because in gambling there isn't any guarantees one can lose his money any time and can also win if luck is on his side though, I guess that day wasn't your lucky day in the game and you went overboard with the money you use as stake . Because for instance it was money you could afford to lose you won't have felt that way you would have just take it as " it is what it is " and move on.
People do not consider what is working for them to know if they should stop or continue to do it, many gamblers are throwing away their hard earned money always because they want to make more money but they are doing it with a wrong mindset. Gambling is not something that can work for everyone, some people have to lose for others to profits therefore if you notice that you are the one always losing, you have to stop gambling because you are the one giving others your money while they make profits. Regardless of using the money that you can avoid to lose, you too have to look at things from the point that you are still losing money and stop gambling or change the games that you are playing because sometimes the games you are playing is what make you to lose and not because you are not lucky.