From author Dave Farland:
When you’re writing a long novel, sometimes as a writer you feel that you are getting stuck in a rut, that your prose has become repetitious, so it is important to find little ways to vary your work.
Most often, writing teachers will suggest that authors write sentences or paragraphs (or even chapters) of varying lengths.
For example, Ernest Hemingway is often considered the “master of the short sentence,” but in every story that he writes, when he gets up to the place where a thematic climax comes in, he will suddenly write long sentences—as long as three or four hundred words even.
. . . .
Anyone who has ever suffered through bipolar disorder knows that even a single protagonist can suffer through violent mood swings that seem to have nothing to do with what life throws at them. Thus, a character may be on top of the world one day and suicidal the next. So the emotional tone in a novel can vary widely, too.
I’ve seen authors who struggle to put in characters who are wildly different, so that each person is highly individual, and that can be fun, since it pushes you to really delve deeply in order to create interesting characters. Thus, you can look at the works of Arthur Conan Doyle in Sherlock Holmes, and find many interesting characters with odd habits, unusual costumes, and so on.
Sometimes you can simply alter your style in small ways to good effect. In John Green’s The Fault in Our Stars, the author will go for fifty pages of dialog where the beats—the character’s internal thoughts and the descriptions of the external settings and character actions—are all skillfully interwoven through the dialog.
Link to the rest at David Farland and thanks to Eric for the tip.
Here’s a link to David Farland’s books