It's a troubling thing to be an adult and be humbled. It mounts very slowly. The temptation to walk away never goes away. The other thing you learn along with discipline is flow. To know when you're in the cupped hands of the medium.
Love can be like that.
Relationships can have a groove. Being in that groove as a writer is what you search for every time you sit down to write. You know it when you're there. And you throw it away at the end of the day if it wasn't there when you were working. I like to think my varied background shows up not so much on the page as in my work ethic.