I'd also add, "don't forget to live." This is especially true if you're young and writing fiction. My son is a brilliant writer, but he's still not lived enough life to distance himself from his work, if that makes sense. He hasn't tasted enough of life to be able to tell his stories without "him" in them. There's a lot of good there, but because of where he's at in life, hi work reads like a continual redo of what he sees as the sins of his past. Living gives one distance and perspective.