HI Welcome!
Let me first say, the alcoholic has to realize for themselves. You did not cause this disease, you cannot control it and you can't cure it.
You CAN take care of yourself
Take some time to read the stickies at the top of this forum. They have a lot of useful information.
Somethings that helped me in dealing with my AH were:
Educating myself about the disease. I recommend the book "Marriage on the Rocks". It is an easy read with lots of good info.
going to therapy
going to al-anon (I found many others who were dealingwith the same issues as me)
and posting here!
Glad your here! Keep posting