Confidence is a habit that can be developed by acting as if you already had the confidence you desire to have.
I have never written a musical. I have never written a weird, interactive piece of theater. I wanted to do something that would be disturbing. It will be disturbing theater with songs. There will be no people on wires. That's probably the next one of those things on my bucket list of things that I need to write before I get hit by that car.