That's why I make lists - every day - crossing off the things I've finished and adding new things. Simple things like, "do the dishes," or "vacuum," to more dreaded and complicated things like "clean kitchen cupboard," or even worse, "underneath bathroom sink." Ugh. I once found a black widow spider, so I am a bit loathe.
But yes, lists. When I'm in Limbo-land, while a book is in production, I try to get on with the next one, doing things that don't require creative thought. There's a lot of that in these books - all the pre-lim border stuff, for instance, which can eat up lots of time. So I do it all now; then when I'm "engaged" fully, I can make progress quickly.
So I assume this would apply to lots of other people's lives. It's always good to have something you do that is exciting and meaningful, but while you're waiting for things to develop, get all that junk done that just sits and accumulates - like the stuff in the back of your closet.