Writer's Block: What is your muse?

If you're trying to create something, like a story, a composition, or a design, etc., do you find yourself imagining how others will react to it? Does that impede or enhance the creative process? View other answers

Oddly, I don't usually think of other people when I'm working on an aesthetic endeavor (as opposed to a practical matter, such as a user interface). Perhaps I should - when I judge it purely for myself I rather come off poorly.