Well, I've been trying to revise my vampire novel (my '06 Nano), and it's starting to bite me in the butt. When I started, I did the chapters that were easiest to revise, which were chapters 1 and 2, and then chapters 20 to 25 (the ending). All I have left is chapters 10 to 12, and am having difficulties remembering when different events and character revelations happened. Really, I should just read through the first nine chapters, or at least the chapter summaries I wrote, to figure out how to revise the remaining three chapters.
Other than that, I'm also finishing up my '08 Nano, which is about werewolves. It's been a while since I worked on that one, but it doesn't seem as difficult to write as I thought it would. So that's at least a good thing, since I wrote the first two acts and never got to act three when I stopped working on it. (I'm still not sure why I did that.)
The writing's going good and I'm excited to be working on something again rather than sitting in the funk I had been in when I couldn't figure out what to work on. I knew I wanted to work on something, I just had no idea what. And I went through idea after idea, trying to work on something, but nothing really clicked. I'm past all that, and I'm feeling much better.