Jack, this is so clever, vulnerable, and entertaining all at the same time on so many levels. I think your predicament is common to all artists. That’s not to diminish the import of your situation, not at all.
Now I’m not arguing with your Muse on this one, but I find it helpful to see talent as a limited resource that has to be replinished, much like you would refill a car with gasoline. No gas, no go. (Sorry for the not-so-artful analogy, but stay with me.)
I would ask: what are you doing to refill/replenish your creativity? Have you fed your Muse lately? Better yet, what are you doing to feed that creative part of yourself?
Creativity can be a bottomless well, but sometimes the well needs to be primed.
You could also look at your creativity as a muscle.
Sometimes it simply gets overworked and rest, relaxation, and rejuvenation are the order for the day.
You’ve been going at it pretty hard now for a while. It’s not suprise that you hit the wall. Maybe back up a little before the wall falls on you.