I love this answer from songwriter David Byrne when asked about working on a daily basis:
Are you a writer who will work on songs on a daily basis, regardless of whether you’re feeling inspired?
Yes. I still think you have to wait for the inspiration, but unless you’re there, waiting at the bus stop, you ain’t gonna get on the bus. If you’re doing other things all day, a song ain’t gonna get on the bus.
[So get on up there to the bus stop, y'all.]