It's too easy to say "just be self-disciplined."
Nobody knows all his inner demons. We perfectly see the weaknesses of others and their examples from life are always obvious and simple for us, but in fact we ourselves have neither the ability to look at ourselves from the outside nor self-control. Imagine that you won a large sum with the first bet.
Will your inner state remain the same?
I wrote that it's better to keep friends around, or write down your limit, or have only cash. The next time I go to the casino, I will definitely follow these rules, because you need to be especially strict with yourself.
That's exactly the thing, having self-control or staying within your limits is not as easy as one might think it is because if you are gambling regularly, you will probably find it hard to maintain a limit if you haven't been practicing that from the beginning. When someone wins a big amount or maybe loses more than they can afford to, that is when they don't remember about any limit or have any self-control, they will either become greedy and want more or will become angry and try to recover their losses.
And we all know what happens in both situations. When you get greedy, you will most probably lose what you have managed to win so far which is unfortunate, of course. When you become angry or emotional, you will deposit more money and try to recover your losses and lose that as well in most cases.
That's why I recommend the methods described above. Psychologists advise you to come to the casino without credit and debit cards, but only cash, the amount of which will be equal to the limit that the player can lose. Let's say such a person sits down to play slots and then if he loses everything, then no matter what emotional state he is in, he will not be able to lose more, because he simply will not have more cash.
Also, of course, a very valuable advice is to come with friends to the casino, the main purpose of which will not be to play games, but to make sure that the player remains in self-control.