Always check your manuscript for over-used words and phrases, such as: so, just, in order to, therefore, or any of your personal favorites. It’s easy to fall in love with a newly discovered word, then use it so much it annoys your readers. Some of the words I’ve seen over-used are ubiquitous, baleful, and humongous. You’re probably not even aware of this on the first draft, so put it on your list as something to look for when you start to edit. Once you discover your favorite, learn all its synonyms so you can replace it with ease.