I've been writing seriously now for about two and a half years. I've churned out several books. Book one is trunked, awaiting major surgery; book two is currently going through the query-go-round. Book three is halfway through revisions, books four and five are awaiting revisions.
As I wrote earlier, I have a shiny new idea, which has steered me away from the revisions. Those revisions wait like a pile of nasty, slimy things but I don't care.
This shiny new idea has possessed me like no other story I've ever written. I'm not sure why. I know that I've fallen completely in love with Evan and Colin. I know that I'm enjoying writing from Evan's POV, in first person (new territory for me). I know that the story has the potential to be very powerful, if I get my research right and get across the fear and uncertainty that poor Evan and Colin are about to endure. I know that, when I'm not writing, I'm thinking constantly about it. Working out the next scene, seeing it my mind's eye. It's an obsession like no other.
I'm churning out words at a NaNo pace - on average, 2k a night. At this rate, I should be done with the first draft in another two or three weeks. Of course, there will be months of revisions and polishing but I have high hopes for this one.
So, my question for other writers is: Does every new story you write take possession of your every waking moment, or is it some stories more than others?