Have you lost touch with the reason you began your novel? An interesting post from Jan Morrison could help - its about Purpose, and as ever with Jan, its wise and insightful. She says - 'I do think when we are attempting something with such a broad scope - like writing a novel or book length memoir or non-fiction - we need to constantly go back to our purpose.'
Her words remind me that sometimes the work to be done is off the page, not on it. Jan's post is HERE.