...it's also about learning more about your own writing. The little nits you catch in the writing of others (like character soup, unending description with no plot movement, or a hairy tendency to change the color of your main character's locks halfway through the novel) will suddenly become apparent in your own.
So get with a crit group and read some manuscripts during those days or weeks you are letting your fingers take a break from the keyboard. It'll be good for everyone.