Generally speaking, the anxiety will pass, which is easy for me to say when I'm not in the middle of an anxiety attack. When you're in the throes of one, it's hard to feel anything other than utter misery and terror.
Anxiety has afflicted me all my life.
All the textbooks talk about avoidance as a classic hallmark of anxiety disorder. So you need a therapist who is sympathetic and understanding but will also push you to do precisely the things that scare you.
To say that my anxiety is reducible to the ions in my amygdala is as limiting as saying that my personality or my soul is reducible to the molecules that make up my brain cells or to the genes that underwrote them.
Even as economic and political freedoms have advanced enormously and generated huge benefits for humanity, they've also created a great deal of anxiety because every time you have to make a choice, there's anxiety about making the wrong one.