Crazy as it sounds, and I honestly don't know if it would help you, but I find those nights when I'm stuck in some dodgy hotel room because of work to be the nights I do my best writing. No distractions of any kind, and I find that I can concentrate better, and the ideas start to flow and hey presto. The best feedback I ever got was for a fest fic I wrote this way.
no subject
So I guess check in, plug in, tune out.