[andrei_says_]

I’ll echo a recommendation which I found productive:

Copy a favorite blog post or a few paragraphs from a book chapter by typing them yourself.

It is a very interesting exercise, makes your brain take in the words and digest them in a different way.

In your case retype one of your coworker’s docs.

Some other sources I’d recommend for this: Seth Godin’s blog, Dan Lyon’s Lab Rats book. Efficient, energetic and energizing writing with a high signal to noise ratio.