Yep, that be The Beast, all right. Recognizing the source of those thoughts is the first step. Once you have decided not to drink any more, the beast becomes 'not you', and you separate from it, so making that decision, that no-matter-what vow, is paramount.
As for your tummy, those feelings of hunger and gotta eat/drink, don't just originate from your brain, they originate from a specific place in the brain, the amygdala. This is sometimes described as 'the lizard brain', common to all of us critters more complex than reptiles. So there you go, then.
Have you made that solemn, harsh light of day plan? Is your AV 'not you'? Do you have a Big Plan?