You don't! You cannot do what the alcoholic is unwilling or unable to do for himself. The best thing for you to do is to gain strength and support through a group like al-anon. If you have not made him quit by now what do you think will change in the future? The addict has to be willing to help himself and others or he will not succeed. AA is one program and there are others, but all I can offer is my kind wishes for your happiness. Good luck.