Your creative work does not require output to have value. To put it differently, your creativity doesn’t have to result in a product to have personal value for you.
As kids, we’d play with LEGO and action figures without trying to monetize our creations or our stories. I was in a bunch of bands in high school that went nowhere outside of a basement, but it was a lot of fun to play.
To be creative is to play. To play, you have to abandon all notions of production. Otherwise, it’s a job in disguise.
Creativity and productivity are not intrinsically related.