You will need to have the willpower and commitment to stop playing. Should also find someone to hold you accountable for your gambling. Or you can seek professional help and therapy.
I agree, and if his addicting is too heavy, then the last solution is only therapy and of course, his family need to know about this so they can also help him to solve his problem. and with other family know about his problem, the other family will watch and will manage his money and don't let him take the money in his wallet because he could be back to gambling place.