So I played some computer games. One of which is APB.
After a weekend of entertaining play I discovered a happy fact: I suck hairy ass at it. My mouse hand has no precision when trying to quickly blast opponents, and many of the players are the kind of dicks that use the anonymity of the internet to harangue players who suck, rather than trying to help improve their play. And this from my team-mates.
In short, I got frustrated, and the entertainment that I took up to keep me from dwelling on my novel pain grew to such a vastly greater pain that I welcomed a return to something I could control, my writing.
In short, if you are having a hard time with something you're fairly good at, do something you suck at for a while. It's a real motivator to get back to familiar ground, even if it's painful too.