Originally Posted by
glasshalffull 
I am still trying to digest your replies, but the thrust of it appears to be that I must've known I was telling myself a lie, with 'I will never drink again'. I wasn't. That's the truth of the matter and what is so confounding. I wish it were that simple.
If I commit to such a statement again, how do I know if I am lying?
IMO, the question itself is irrelevant. JUST COMMIT! Make another Final Decision and start again. In my admittedly limited understanding of AVRT all of this back and forthing is just your Beast manipulating you. It wants you to feel this uncertainty and lack of confidence. It wants to confuse you.
The book states that any thing or thought process that allows you to consider drinking again is your AV and should be ignored. So don't get caught up in the intellectual examination of these questions (although it is interesting.) Just decide.