What I've found, when I'm tired, is that my writing default is passive. It's lazy and it's wordy with an inelegance that makes me wince. I'm at that point with the novel. Nothing seems to flow or fit in terms of sentence construction or word choice.
It's all clunky and very grating, wordy and talky, and it just drags.
And that just depresses me. Feeds my lethargy and my writerly bad habits which are never very far from the surface. It's a vicious cycle.
What's your default? Is it good and does it make you a happy writer?
What do you do to kick the writerly blues? Or to kick start your work when your default isn't what you're looking for?