Writer's block

I don't really believe in writer's block as normally conceptualized. There's never been a wall that forcibly kept me from writing. It's always been one of two things: overwhelm due to poor preparation, or overwhelm due to too high of expectations. I'm sitting in the second one right now. I finally feel I've improved my writing enough to put something together worth querying to agents, and that's what I'm trying to write. And suddenly the weight of that expectation is making my hands too heavy to type. I'll still get down my daily 1k words at least, but it's not flowing today like I want it to.