This notion to wait around in the rain until you get struck by lightning to make art (or anything) doesn’t mesh with my experience at all. What comes much closer is the famous Chuck Close quotation: “Inspiration is for amateurs. The rest of us just show up and get to work.”
Even after years of sharing my simple sketches and speaking all over the world, you'd think I’d be used to the feelings that come with the impostor syndrome. The impostor syndrome has not gone away, but I’ve learned to think of it as a friend.
You’re fired. The job you’re fired from is one you never should have had in the first place — being a critic of your own work. Your job now officially has nothing to do with deciding if the work is good. Your job is to do the work, put it out there and let the world decide.