Welcome back and thanks for sharing.
The experience you describe sounds to me almost like a dramatization of the inner working of addiction, and your desire to escape from it. Maybe you've seen the recent thread,
What are your thoughts on alcohol?; that might be a place to explore that relationship some more.
You say "addictions" in the plural though. Would that be something you'd be willing to expand upon here? Either way, it looks as though you can see the choice that you face quite clearly. We're here to support you in your own strength to move forward with this.
Something I've found to have almost completely eliminated my own desire to drink alcohol is regular useof Syrian rue/harmala alkaloids. YMMV of course, and there important considerations about compatibility with certain other substances so I'll avoid getting too far ahead of myself with this one!
The combination of DMT with harmala alkaloids, or plants that contain them, is of course well known. Have you ever tried this?
As far as your last question goes, we can only speculate. Perhaps, had you accepted the "demonic joint" it rather would have allowed a deeper exploration of the issue. Do we even know what "demonic possession" is? From a materialist perspective, ii's all down to neurological interconnections and their relative weightings. The trick is in how we actively optimise all of this in order to manage the relative balance of harmful and beneficial behaviors.
Did you re-read
your old thread? This all seems very much like a continuation of that same theme.
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli