हेलो ...my father is 54 years old now and Is an alcoholic ...he doesn't take drinks regularly..when he starts , he drinks 15 ,20 days in a month then he leaves the same for 2,3 months after that again starts drinks. sometimes he leaves for some days and then again he starts to drink an alcohol ..it has been thirty years and his habits is not changed...my mother gave him medicine but there is no impact on him ....what to do ??