There is always the danger of automatic writing. The danger of writing yourself towards an ending that need never be told. At a certain point the story gathers momentum. It convinces itself, and does its best to convince you, and the end in sight is the only possible outcome. There is a fatefulness and a loss of control that are somehow comforting. This was your script, but now it writes itself.
Jeanette. Winterson. The. PowerBook.