I think I have made a decent start. I'm up to 7200 words, I have a few chapters ahead vaguely plotted out, and a tentative ending. I have typed some and dictated some, to avoid burning out either my wrist or my voice completely. And I have still had time for computer games, cooking dinner and even taking a walk. Actually walks are part of the creative process. I am not sure I could write without them, but I suppose any activity would do where your mind can roam free for a while.