Stage fright is considered taboo. It's not only considered taboo, but also shameful. I have known many a highly successful, seasoned professional, who has confided in me, their deep, deep shame at having nerves that cause them such distress.
I recently decided to take a comedy holiday. I just wanted to have a few weeks in my life where I wasn't trying to find the funny in everything. Where I could read some books, listen to music and just relax.