They don't beat the fear or fight through it; they do the thing afraid.
You do this by forming a habit of writing every day. Do it so frequently that you don't even have to think about it, so much that your brain doesn't have time to feel fear. That’s what the pros do. They don't beat the fear or fight through it; they do the thing afraid. And it’s what you and I must do, too, if we're going to get serious about our craft.