Adonis>Thanks.
Shizzo>Yep, he does that pretty often. Though it's a rough period for him currently, lots of troubles in many fields of life. But that is not the answer, obviously. Well I guess there's no way to "force" a person to do that anyway, unless the person forces himself (that's what you did I assume).
No, I was actually confronted about it. I denied it at first, but I know now that I had a problem.
I probably would still be drinking if I was left to my own devices.
Sit your friend down, and tell him you think he may have a problem.
Thats what friends are for.