I remember the adrenaline rush of being observed. When supervisors would step into my classroom where I was teaching a lesson, or media critics had been spotted in the opening night audience, my mind would jump ahead to the moments later when facing these experts one on one. This always gave my adrenaline a boost.
Why? The anticipation of feedback offers a turning point. No longer is my perspective the only one that counts. It's the perspective of those in the audience. That's what my presenting/performing efforts are based on. No longer is my success based on what I experience - is based on the experience of those in my audience.