sure, I can only share my experience
I''m not saying drinking and drugging caused my depression or anxiety - they've been with me since I was born...but I do believe they made things worse in the long run, not better.
Its hard not to be anxious when you get to the the point that simply not drinking makes you anxious.
Its hard not to be depressed when drinking works against optimism too.
I was always looking for reasons to drink.
Without meaning to or even being aware of it I honed in on the negative because the pay off was a drink.
You may indeed be different Sam - I don't know you very well - just trying to help
D