Many years ago as a part time undergrad student (I went to a "nontraditional" university) I took an Interpersonal Communications class, which was very good. I told the instructor that I had fear of public speaking and wanted to know if she had any recommendations for overcoming it. She strongly recommended a class called "Acting for Non-Actors". She practically guaranteed it would cure me. Alas, I was never able to fit that class into my schedule, wish I had.