Why consistency beats expertise every time

Where do our nerves, and worries, and fears of showing our music to people (especially works in progress) come from? Why do we tremble, and quake, and shake in our boots when a new song or piece of ours of any kind gets performed? You might think... the devil. And, that's not wrong. But I think it's really from an obsession with expertise, genius, and hero-worship that is rampant in our modern society... especially in the age of social media. We constantly compare ourselves, our hair, our...