so you want to drink, and as you say, you know it's a reaction.
a re-action.
one there is no need to turn into action.
i find i can have "wannadrink!"feelings without needing to do a thing about it. it's ludicrous.
but you're feeding it. giving it more time, more headspace.
what proactive things can you do instead? get support? play the tape through? go to a meeting?
if you haven't already, check out the AVRT threads in the secular connections forum farther down; they help with combatting the irrationality of those voice-whisperings.
other than that, you might need to change a whole lot of other things in your life, such that there are different avenues to take when feeling down, negative and things aren't good. there are different avenues for that, too.
you don't have to follow your reaction into a drinking action.