I've sat down a few times with no story in mind, and nothing to write about.

I just started writing and ended up with a few good songs that way. Of course, that road is littered with the broken, derelict, rotting shells of the songs that never made it to the finish line.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.