I thought if it is a single piece of advice I could give any person suffering from fear to speak publicly. Although I really don't think there are universal solutions in this area, I noticed that it is one thing that may be helpful to you. This advice is about yourself, don't think that your audience think.
There you will see some 'biofeedback' is called. This is a process of speed up any physical symptoms that can occur just by you to watch. For example, if you feel peace of mind and it manifests itself in your body as deep, normal breathing, you feel even deeper rest by observing your deep breath. If you think, fear and shaking hands it pushes's through let you be your fear even bigger, if you shake your hands say thought about would be. Sometimes while coaching a client would tell me "I really fear that situation am." I may not be to make good impression as I should, I can make some stupid mistakes, I can freeze and forget everything what I say... ". Sometimes do the same?
If so, you realize that you yourself constantly think about. Try a different angle. Beginning about your audience. Why the meeting will be a conversation which you came to the Conference, or whatever is? What do you expect? What was they feel that it would come to value the time and effort? How can you add value to your life? Only in this way of thinking and it is very likely, you reduce your stress a lot will focus. It is very simple but very powerful position. Also you will experience some fear it much easier to handle if you will just focus on added value for people instead of thinking "Oh my God!" My hands tremble! ". Try this advice before you would test any other solutions.