I enjoy being around people. However, when I am going to speak at a live event I try to conserve my energy beforehand. After I speak, I am more than welcome to spend time with people because I have already fulfilled the main purpose I was invited to fill. If you waste all your energy with people before you take the stage, you could face mental fatigue or lower energy while speaking. This is why I often won’t talk as much with people beforehand, and why I wait until after I speak to greet and get to know people in the lobby.
