Hi. Sorry you are going through this. I have tremendous anxiety, sometimes to the point that I feel I cannot clearly convey what I want to say, or cannot stand up for myself. I got sick of feeling regret after every conversation because I was too anxious to feel relaxed. And this - is going to sound a little crazy - but I started taking acting classes. I had to do a monologue, get up in front of people and deliver a performance using different voices, take on different characters, interact with other actors who sometimes had lines that were hostile and scary...and every single day I showed up at acting class, my heart pounding, wondering if I would forget my lines or be startled by dramatic scenes with screaming, yelling, etc. The last day I had to give my dramatic monologue of a person who is tormented with voices and hallucinations. The lines were disjointed and tangential, and I was shaking with fear that I would forget.
I guess what I'm saying is that this type of exercise allowed me o experiment in a safe place with my anxiety - 'playing' a bold character, sometimes crying....pulling anxiety from my real life into a way I could channel it with other people.
It definitely helped. I'm more relaxed when I talk to people. Maybe it's worth a shot?
P.S. I ended up being cast in a short film that was in the Kite Film Festival this year. Just a short spot, but lots of fun.