What stops us from our work, from making things, is often fear of the unknown. What if they don’t like it? What if I’m a fraud? What if it sucks?
But that’s our fear’s job. It’s a valuable evolutionary trait and we need it, but not where art is concerned.
When editing and refining, you can consider and revise and judge. Deliberation when you’re working only stops the flow. Trust your habit and your instincts with the blank page, The uncarved block, the white canvas. Gut instinct is just another term for getting out of your own way.