Recall the moment that you made your Big Plan and think of the positive feelings you had around that. You can recall that moment any time you want and feel the Abstinence Commitment Effect.
You may think lots of people know you ARE a drinker, but actually all they know is that you HAVE BEEN a drinker. And, they will certainly suspect that you WILL drink some more. So, you are truly the only person who knows that you USED TO BE a drinker, and no longer are.
Thinking or saying out loud "I used to drink!" will, of course, set off all your Beast's bells and whistles. Your AV will tell you you are lying to yourself and you will feel that anxiety. It's a good time to practice shifting back and forth from how you feel about quitting and how it feels about quitting.
Another way to counter a Beast attack is for you to use swear words against it. Your AV certainly won't hesitate to use them against you. Swear words are somewhat unique in their ability to circuit directly down into your midbrain without the usual neocortical filtering. Your Beast WILL hear YOU swearing at IT. You can actually yell it out for good effect, although if there are people around it may be a little awkward.