A very long time ago i always used to get severe sweat and shiver attacks before i ever had to speak, present, or perform in front of a group, even small group of people. But after you force yourself to keep doing that, you also increase the size of the crowd, and do go up on stage or with a mic more frequently. This is not overnight or a few days, but is a gradual process that can take months, years, or even several years, to master.. Even then, you will naturally prefer to be out of the spotlight if not necessary.. But eventually you will slowly lose the "stage fright attacks", and start to like, if not love, to be on stage and admired by the audience. A little narcissism can help.