I have a job doing stand up comedy.
No way! THAT is a tough job. Just you and a live audience and whatever is thrown your way....tell me more!
I was so nervous when I first started, but the more I did it, I was better. 
That instant feedback from an audience must be both thrilling and terrifying. I love watching Comedians in Cars Getting Coffee -- it seems many successful comedians had moments they just knew they *bombed*