I caught a TEDx talk on YouTube by Linda Apple Monson on "Overcoming Stage Fright," delivered at George Mason University. She revealed how she was able to overcome her fear of performing on stage as a pianist. Here are the points I remember: (1) Prepare yourself well. (2) Forget about yourself, for worrying about yourself is being selfish. (3) It's not about you, so focus upon just being the channel through which the joy of music is transmitted to others.
Good advice indeed. Let's apply it to evangelizing the world. (1) Know God intimately. (2) It's all about God, not you, so leave all in his hands. (3) You are simply an instrument he uses to spread the good news.