I could have written your post about 2 weeks ago. I asked for a prescription for Antabuse -- filled it, took it on the first day, then read about what I'd just consumed. 4pm is a terrible time -- but at 6:00 a.m., I have the Willpower of the Ages.
Not that I think Antabuse is the answer, but for me, I knew that I lacked the ability to follow-through on any promise I'd made to myself unless some very scary aversion therapy was there to back it up.