Had been planning to do an Ask Luna column for today, but got distracted – the current book’s going slower than usual and it’s taking up all of my time.
I hit these blocks from time to time. Usually it happens either when I haven’t planned out the story in enough detail, and need to stop and work it out, or when I have planned out the story in detail and realise that it needs changing. (The second one’s much worse. This delay is the first kind, luckily.)
It’s not really an emergency though – it’s happened before, it’ll happen again, and I’ve gone through it enough times to be used to it (and I doubt it’ll stop me hitting my deadline). Still tends to make it hard to focus on anything else, though!