If only my high school and college teachers had given advice like this. Instead, we were forced to follow the Edwardian rules of Strunk & White and teachers generally looked down upon any non-standard form of literature, including the science fiction I was reading at the time -- books by Wolfe, Delany, LeGuin and Gibson (this was in the late '80s). As for the suggestion in the article to follow the voice in your head…
I recommend "The Writer's Voice" (Alvarez) for more on this.