I used to have a problem with anxiety in the classroom. I would get very self-conscious about what I was going to say, and had to write it down beforehand so that I didn't "make a fool of myself" in front of my peers. Mostly, I ended up sounding like a robot. I found that working my way into larger class settings really helped with my anxiety. I started with smaller classes, gained the confidence there, and worked my way up. That's not always an option, but it also helped for me to join groups/start new activities.

Good luck!