Hi, shazam-
I completely understand this:
The feeling of anxiety was one of overwhelming panic and fear. I felt very shaky and had dizzy spells as though I could pass out.
This sounds exactly like what happened to me the day I decided I had my last drink. It was terrifying and I felt certain I wouldn't live through that afternoon.
Reading and posting here, and finding support from many who found sobriety has changed my life. You can be free of all of the anxiety that drinking brings, too