When you see the result of the game you just played before you, you will definitely be tempted to play again to either win more money or recover the one you've lost. A gambler who chooses to go for luck base games like slots should learn how to control his emotions. Failure to put his emotions in check, he will keep enriching the casinos at his own detriment
Controlling emotions not easy as it may seems , aslong one has already started gambling the chances of he or she getting overwhelmed by their emotions is high , because no one enjoys losing money , yeah when one emotions is off he or she will only endup increasing or multiplying that losses in the end that's why no matter how hard it may seems one should always do so in controlling their emotions, by having a good self-control.
Yea it may not be easy, but it is actually achievable. It is adviceable that every gambler has a budget. Such that, even if they win or lose and their emotions wants to come to play, tempting them to play even more, they already have a budget and won't spend more than they have in that budget. An indisciplined gambler might not be able to stick to his budgets, but at the end his finances suffers.
I have been in that position before where I allowed my emotions push me to gamble more than I should. Now I know I am a better gambler because I know when to stop gambling and the right amounts I should spend on gambling from my budget. From my own experience, I am convinced anyone can control his emotions if he is determined to.