How to have fun. First find something you have never done, or haven't done in a long time. Then forget you fears and just jump in. If you are afraid of speaking to a group of people, find some friends and practice making a speech to them. Have them give you feedback. Learn to think and speak on your feet. Then go find that place where you can give your speak.
Hey, it is only a speech. You may be surprised and how you can survive.