From On Writing by Stephen King:
In the spring of my senior year at Lisbon High--1966, this would've been--I got a scribbled comment that changed the way I rewrote my fiction once and forever. Jotted below the machine-generated signature of the editor was this mot: "Not bad, but PUFFY. You need to revise for length. Formula: 2nd Draft = 1st Draft - 10%. Good luck."
Of course, for me, sometimes more is more. I often overcompensate by only verbalizing 50% of what I should say, because I'm afraid of being too verbose. Then the person listening to me has no idea what I'm talking about, because they can't read my mind. Oh well.