As I talked about on my web slog, I was having trouble with my current Works in Progress (yes, I'm doing 2 books at once) because I wasn't hearing the characters.
I don't mean literally hear them, although sometimes I do. But when I write, I have a movie in my head of what will happen. Until I get that movie going, writing is a chore.
January was a chore. I didn't have the movie. I now have the movie for one of the books, so the writing is going good. The other book ... I'm still waiting for the characters to step up and star.
I'll report in next month and let you know if they show up.