It really is dangerous, it leads to chasing your losses, if it's your bad day accept it as it is, if it's your lucky then learn how and when to stop,
each day is very much different from the other day, take every game as it is don't try to win it's a luck based game, don't try to fool yourself that you can win by extending your roll, learn when to stop and how to stop
I'm following Martingale strategy which will be getting me profits only if I am extending my rolls; I mean even I am looking like out of control, I am still in control over my gambling and this way if I keep trying then I may get chances to recover my losses and also will get into profits. So, it is not only about when to stop but it is all about how you are approaching in calculated manner.
Gambling is based on pure luck, I agree. But, there are methods are available to maximize the chances for your lack factor to favor you.