The maxim is always that you should only gamble with money what you can spare, but most people know that. More importantly, keep a bankroll for gambling, and a strategy. And under no circumstances go over your limits, try to put your emotions aside. Only then can you enjoy it.
and also not just limiting your budget but also the target wins because the problem with most of gamblers are yes they have budgeting but they don't have an exit plans in which instead of winning in the beginning yet they end up losing because the lust to win when we are playing is no ending , as long as we are seeing the funds in our pocket still we will play and bet.
so two things , prepare your budget to bet and prepare your target to win.
In my opinion, setting a monthly budget for yourself in order to limit spending money is a good idea, but I try to play gambling is not regular so as not to develop a gambling addiction (as in Pavlov's famous experiment with the dog when the dog has a new conditioned reflex), so my budget is allocated for one game and is no more than $100.
i think monthly budget is hard to maintain instead we should put a budget per Gaming , meaning each time we play there must bea budget .