One day every week, I do not let myself write. Just one, and it can not be a day where I spent most of my time at work. And this day off never reduces the number of words I write.
The reason is that this day off gives me a chance to enjoy life, to experience what I write about. I can watch movies, read books, write blog posts (like I am today), or any other number of things. You can even go to that rarely-seen-by-the-author realm, Outside. And when I come back from that day off, on average, I write nearly twice as much as I usually do.
Remember, there is a reason we take two days off of work and school each week. There is a reason for the day of rest. Because we all need it.
What will you do with your day off?