Dear Welcome to HCM We understand your concerns I went through your details. The first step in treating alcoholism is accepting that he have a problem. Confronting an addiction and accepting responsibility for his actions isn’t easy. You need to motivate them to such thinking style, or they should realize themselves. But it’s a necessary step on the road to treatment and recovery. He should then consult a psychiatrist / psychologist who fill follow this treatment. 1. Detoxification using medicines. 2. Behavior modification with the help of therapies. 3. Counseling. 4. Medication to sustain and 5. Long term support. These given steps are essential for any addict to get effectively rid of alcoholism. Therefore, He and family members need to stick to the treatment plan and cooperate with your psychiatrist / psychologist. I suggest you to read the article in the given link. https://www.mentalhelp.net/blogs/alcohol-and-personality-changes/ If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck.