We have to control ourselves, it looks simple because it is related to ourselves, but in fact it is a complicated thing because we have to fight ourselves.
Many people say that our biggest enemy is ourselves and that is true. Many people end up failing because of themselves. If we look further, this does not only happen in the space we are talking about, but in almost all aspects of life.
They say humans are social animals. And animals need to be tamed sometimes and so does humans. Sometimes we wanna just do certain crazy stuffs that would harm us and even when we are told, we'd still feel adamant and still have the urge to do it, but it requires those who have mastered the act of self control to be able to escape such situations, but one thing is for sure, some people easily give in to their own desires and wants without even at least attempting to fight it.
Self control is indeed very important for us, not just in gambling but other areas of our life, because if we do not have self control, we'll end up making slxertain decisions without even thinking, even when we know our actions would result to future consequences, we'd still do them after all simply because we have the urge to do so.