Addicts must be accompanied until they recover so that there is no gambling anymore when he is alone so that especially the family must be able to provide stronger support to them.
The support from family is the stronger power for him to stay away from gambling. If his family members can give support, and always beside him, I am sure sooner or later, and he will know that the family is the important thing in his life. He will not abandon them without any money or without fills their daily needs because he will think of his family, how he can make them happy and else.