I've only had one experience with DPT in which 50 - 60 mgs was snorted in bumps over about 15 minutes. I really never hallucinated but I can't remember having such wonderful euphoria and body rushes since taking MDA years ago.
I should write a trip report (spontaneous songs about the beautiful little birdies came out from nowhere)
Unfortunately, I feel I'm exactly in the same mental state as the OP. I've self medicated myself for decades with alcohol and weed. My body says I can't do the alcohol anymore, but I can't enjoy smoking dope by itself due to the the anxiety it generates. I need to fix my shit, I don't think I can stand this much longer.