Behind every flinch is a fear or an anxiety - sometimes rational, sometimes not. Without the fear, there is no flinch. But wiping out the fear isn't what's important - facing it is.
You just do it, then if you die, you die.
Every creative person, and I think probably every other person, faces resistance when they are trying to create something good...The harder the resistance, the more important the task must be.
A fear of weakness only strengthens weakness.