Stage Fear or fear of public speaking or performance, takes a huge toll on self-confidence and self-esteem.
Sadly, some people leave school or a job or a promotion only because of this fear.
Many, including some seasoned professional performers, are victims of this silent terror.
The best remedy for this is getting on stage more often than you want to, and facing the fear.
That said, here are some other ways to help you 
Thoughts?
How do you overcome stage fear?
