The blank white page (or screen) is pretty much ubiquitous with writer struggle. It’s scary. It’s huge. It just stares back at you, daring you to mess it up.
I think there are a few reasons why starting is hard. We’re afraid of writing the wrong thing. We’re afraid we can’t do our great idea justice. Everything gets backed up behind that anxiety and we can’t pick out what to write first. We’re pretty sure someone else has already taken on this idea and they did it better.
It all boils down to self-doubt.
Remember when you were a kid? Someone would plop you down with a box of crayons and a pad of scrap paper and you’d just grab your favorite color and go to town. It wasn’t hard to create art until you got old enough to start worrying about quality.