Think of this as a sticky note and put it on the fridge for yourself.
This is a public service message from old Uncle RW. You may send dollars.
From time to time in my blog travels I do see folks who lament (because just about every blogwriter has the same mantra) that "one day I'll sit down and write that book." And there's plenty who can certainly do it and that really ought to get off the wish list and just get going already, yeah?
But seriously? You have to get to the point where you can't imagine a week spent where you aren't working on it, and can't remember what it was like not to be working it.
Or else you just aren't. And then I suppose you can sit there holding head as long as you'd like.