My book idea fell apart, as these things tend to do, so now I’m casting about again

I got about fifteen thousand words into my book project, and then it fell apart and I completely lost enthusiasm for it. I've learned to pay attention to these feelings. If you don't even have enough interest to make it through a first draft, there's no way you're gonna have enough to make it through the months or years of revision the book is gonna need.

So now I'm back on the prowl for a new novel idea. I wish I was one of those people who had a zillion novel ideas on the back burner. I don't. In order to write something, I need to not only have a conceit, I also need to have a character who really pulls at me: someone who's both desperate and heroic. And, at least for me, it's not easy to come up with someone like that.