If you think about it, the only difference between fear and excitement is what we label it. The two are pretty much the same physical and emotional reaction. Before we can do that however, we need to realize that fear is not the enemy. We must know that, if we do the thing we fear, we will not die. I never had a student die from giving a speech.
Most people treat fear as a wall.
It is the edge of their comfort zone. As they approach the wall and the fear increases, they turn around and walk away. They do not do the thing they fear. Hence, the belief that fear is a limitation, and not a prelude to illumination, is kept alive. Walk through the fear.