Since day one seems to be the sticking point, why don't you figure out what your routine is around drinking and make a plan to do other things that won't trigger it. If you're a drink alone at home person (raises hand), plan a week's worth of evenings that get you out of the house and doing other things that don't involve alcohol--gym, movies, museums, whatever. If you're a drink at bars type, make evening appointments for hair, training, coffee with nondrinking friends, whatever fits your life so you know you'll be letting others down if you don't show up.
All of this presupposes that you haven't experienced severe withdrawal symptoms, in which case get yourself to your doctor first and foremost?
And of course, get all of the alcohol out of the house. No saving anything back because it's expensive, or you'll gift it to someone, etc. etc. Out. Down the drain.
You can do this!