Robert, im brand new to this site, im 27 so basically your age. I have recently (past 8months or so) started getting anxiety. It isnt really social anxiety but a feeling of hopelessness and impending doom. I didnt realize for a few months that the anxiety was amplified quite a bit when i was hungover (even when i was just lethargic the day after drinking)
I am by no means attempting to diagnose you but if you have been suffering from anxiety since you were 18, which in many peoples cases (certainly mine) when i started hitting thr booze full time. Perhaps your anxiety could be linked to your drinking or at the very least amplified by it like in my life.
Hang in there my man, im only on Day 4 and i havent faced a Friday or Saturday yet