Self-pity is not in and of itself, Addictive Voice, but the Beast can use self-pity to create a pathway to the bottle. The Beast is revisionistic, and it always tries to change the motivation for drinking, so that the real purpose remains concealed.
It will try and turn self-pity into what we term purposeful suffering in AVRT. Suffering with the purpose of justifying, or excusing, a drink. Of course, feeding the Beast its precious stuff for so long caused much of the suffering, or at least made it much worse.
Regardless, even if that were not the case, the key to AVRT is the separation. It, and not you, wants to drink. Even if the Beast were not responsible for present suffering, it would still use the same argument, but why exactly should the Beast have a personal party just because you are suffering?
Purposeful suffering is a common Beast tactic, and this is how to see through it. The Beast does not really care if you suffer, as long as IT gets to have a personal party. If this leads to more suffering for you, IT will just try to use that new suffering purposefully, to justify yet another party for itself.
The Beast may also try and attack your character, to convince you that you are a congenitally defective loser on account of having so many problems, some of which IT helped bring about, so that it can transform into 'Dr. Beast' and suggest some good 'medicine' for those character defects.
Simply recognize the Beast's revisionistic nature, and never allow the Beast to change the motivation for ITs personal parties.