Writing is like any other exercise. We can get stuck in the same old routine, writing the same old stuff.
Sometimes we need to just flex our imagination and stretch our schedules. Or our stories. Or whatever should be done to get the blood flowing again.
A few months ago, as I was writing The Bad Boy's Redemption, I noticed a peculiar condition. As soon as I reached 1000 words I'd close the story. Even if I wasn't tired, even if I still had time to write. It was like the way I used to run in track. I never went over three miles.
I never stretched myself past my comfort zone.
Are you cramped in your writing? Have you thought of writing less, more, a different story, something to just stretch your creative muscles and get some juices stirred?