There are several techniques you can use, if you are very nervous speaking in public. The best method I have found is simply letting go of whether you matter and focusing on the audience. Throw yourself into your content and your audience and let go of self.
But if nervousness does occur, what do you do? Let’s breakdown what causes it. Nervousness, at its root, is fear. We are afraid of looking like a fool. Fear is an emotion. Imagine it’s like a cloud in your mind. There are a few emotions that are stronger than fear, that blow it out of the way. Love, Anger, Laughter are all stronger. If you think of something that makes you feel tremendous love, or makes you really angry, or makes you laugh—those pictures/emotions drive the fear out like a wisp of wind.