Starting 'writing' does not mean starting writing. Ok, let me explain what it means. If you think that starting writing your novel - or even short story - means writing Chapter I on a blank sheet, I just think you're wrong. Before the step of writing, there's much to do. First, ask yourself these questions:
- Do I know what I'm writing about?
- Do I know how my story will end?
- Do I know who are my characters?
- But, above all: Do I know why am I writing?
If you haven't answered one of these - there should be many others - there is a problem.