If these gamblers can be disciplined enough they will definitely have self control, every disciplined person doesn't struggle with controlling their selves because self control is embedded in discipline. This is what gives the restrain and help their mind to continually keep them in check, when they are discipline, they basically control how much they participate in gambling without supervision because they have discipline, this way they will be able to see gambling strictly for entertainment and leisure and as such they almost don't get addicted because they are able to control their selves well enough not to get to the point of addiction.
Discipline is needed when gambling to prevent large losses, and with the addition of good self-control, they will not lose a lot of money and can also control themselves while gambling. With discipline and self-control, they can manage the use of their money and also know when they can stop gambling so that they will not experience large losses. But most gamblers don't pay attention to this problem and continue gambling until they lose a lot. Maybe they also won't realize that they have little money left because they enjoy gambling so much that they forget to pay attention to the remaining amount of money.
also from his economy, which initially he was well-off now he sells a lot of his goods just to fulfill his gambling desires, and this is an example of the harmful effects of gambling if we don't have limits on gambling. not only harming yourself can even harm others such as the destruction of the harmony of family relationships, where previously harmonious family relationships turned into always fighting just because one person was addicted to gambling. So it's best to have limits in gambling so that nothing happens that you don't want. and gamble reasonably not to excess.
And it is true that gambling too often can cause him to lose a lot of money, and that is indeed a bad example of someone who cannot control himself when gambling. We have to be able to prevent this from happening to us so that we don't sell our personal belongings to gamble. Apart from that, if someone becomes addicted to gambling, a person can have bad relationships with other people around him, and this is difficult to repair. Maybe they should immediately find a way to overcome their gambling addiction problem because otherwise, they will not be able to get out of gambling and will get deeper into gambling.