I don’t know how you handle it because it is a constant thing. I think what I always try to do is say to myself, “How did I feel about this last one when I was around this point, was I feeling good?” The answer to that is usually, “No, you were feeling terrible. You didn’t even know that you wanted to make the movie.”
There are always times when you don’t know if it’s a movie.
Wes Anderson on self-doubt and screenwriting