I do it too, it's like something comes over me and next thing I know I'm on my way to the liquor store, I call them "zombie drives", it's like I'm some zombie driving to get my precious wine.
It actually happened the other day, but I didn't drink what I bought. But it was still the zombie drive.
I have tried and tried and tried and tried to drink just once a week, I can do it for a while, but I finally gave up, before I know it, I'll be drinking every second day, hungover over, furious and ashamed at myself. I have done this for years.
I can't handle my drinking, I just can't drink.