You know how there's software that can block your access to the internet for a fixed amount of time, supposedly to increase your productivity by keeping you off Facebook or other time-suck sites? Well, this is what I have: She may not be software, but she is soft. And she does keep me off the internet, but I don't think she's increasing productivity.
But this whole train of thought has gotten me looking into RescueTime and WriteRoom/DarkRoom programs. Although to be completely honest, I'm going to start with this writer's-hack of Microsoft Word (because why should I give up the word processing features when I don't have to?) I've followed the instructions and for my experience, it turns Word into a notebook. No, not a computer-notebook, but it tricks my brain into thinking it's writing in an honest to goodness notebook-notebook. As long as I don't over-analyze the fact that I'm typing not writing by hand, I can forget for a time that I'm on a computer.
Now. If I can just wrangle the cat.