This is where many gamblers actually go wrong. They know they should control their emotions properly but they don't do it in their actual gambling. That is because they can't remove the greed and addiction from their character in reality.
But if they start doing this little by little even by limiting our gambling money, we won't notice that we will gradually be able to control ourselves.
In fact, I don't see a perfect way to control yourself in a gambling situation even with the freezes and financial separations in place because there is more freezing, our return is still in the casino, it feels like once we gamble and lose, we get frustrated then come back for revenge and once revenge fails, the cycle of leaving then coming back still becomes an unsolvable problem. Emotions in this environment are too free and instead of craving for control, people release too much, unless they are not in this environment, otherwise, emotions are just wild beasts.