One of underestimated tasks in nonfiction writing is to impose narrative shape on an unwieldy mass of material.
William ZinsserRewriting is the essence of writing well: it's where the game is won or lost. The idea is hard to accept. We all have emotional equity in our first draft; we can't believe that it wasn't born perfect. But the odds are close to 100 percent that it wasn't.
William ZinsserGet people talking. Learn to ask questions that will elicit answers about what is most interesting or vivid in their lives. Nothing so animates writing as someone telling what he thinks or what he does - in his own words. His own words will always be better than your words, even if you are the most elegant stylist in the land.
William Zinsser