via A Writer’s Path:

There are three points:

1. Avoid Repetition – In the substance of your writing, words used, plot occurences, etc. Sometimes repetition is useful, but you have to know how much you’re doing it.
2. Avoid Monotony – how is this different from “Repetition”? Here the author refers to rhythm, i.e. what do your sentences “sound” like? A variation between short, staccato bursts and riverine flow is the recommended idea. I’m a fan of of that approach myself.
3. Know the Expectations You’re Creating – This basically means “write for your reader”. What are you signalling to the reader in terms of where story and character are going? You need to know these things to fulfill them (or to violate them, if that’s what you’re planning on).

Those are your takeaways, but Read the Whole Thing