Falling into a rut can be one the best things you can do as a writer if it's a good rut.
What would that be?
1. Writing daily.
2. Not getting distracted by so many of the lovely distractions the Internet has to offer. (Not an infinite number but a lot!)
3. Ignoring the little inner voice that says, "I don't feel like writing. I'll wait until . . . " (I suspect most writers on a daily regimen don't "feel like writing" as they begin each day's word count.)
4. Writing first and editing later. (It's harder to write when you're tired than it is to edit when you're tired.)
5. Accepting the fact that writing takes effort and there's no way around that.