You can make use of your fear. I am not kidding. I am being realistic. fear is something that holds you from acting. Fear of public speaking is consideres to be one of the worst fears a man or woman can suffer. How can you make that kind of a fear to empower you.
Just recall the times you were gripped with fear. What did you do during those times? If you recall real incidents, you will remember that you took extra care in doing what you had to do.