You are not supposed to bring your emotions to gambling,it's a game for fun and not a do or die afire knowing this alone keeps you on track and helps you go through life and over come gambling failure challenges.
This depends on how you take gambling. Some people gamble for fun while other see gambling as a way to earn daily living. It isn't a very good idea to take gambling as a way to earn daily living as such people later turn themselves to a gambling addict. People gamble for fun will never go angry after losing because they will always gamble with only the money they can avoid to lose but the otherwise can gamble with any money with him/her hoping to win. So if such gambling lose, such person may get worried and wear up anger as he/she keeps thinking of how to recover such money especially if the money he/she uses in such gambling isn't his/her. The best is for one to gamble for fun with the money you can avoid to lose. Although, I never have such experience but if it later happen by mistake, to relieve myself, I will rather engage myself in what I love doing most (like playing video football game). This will help me to overcome unnecessary thinking which can lead to making a more risky decision after I had lost to gambling.
Yeah, at the end of the day it must be clear that gambling can inky benefit the casino.
If the gambler expects to win then there is no way they can be happy.
In the end it is all down to math and the odds are against the gambler.