I am an adept solo guitarist, I have confidence in my playing abilities. I know that when I play, the audience will enjoy it. But I rarely play solo in public because of stagefright/terror! Of course, this has limited my musical career drastically.I often play with others publically and, at those times, I do not experience such terrors. I am totally relaxed! But, alone (which is how I play my best) I feel naked and exposed. I actually shake with fear!
This is extremely frustrating, especially in view of the fact that I was a minister for many years, preaching before some large crowds, and never experienced stagefright on the pulpit!
I have no advice to offer you, but I wanted to share this with you to let you know that you are not alone by any means!
khandu