Pacing is what keeps your reader reading. In suspense/mystery/thrillers, pacing is easy to identify: what starts out as a problem grows steadily (and generally, rapidly) worse. When I write my humorous mysteries, I use humor to relieve some of that growing tension in my mysteries, and my uphill roller coaster ride is one of short climbs and plateaus; thriller writers often choose steeper climbs with no reprieves before the final sheer drop. As the writer, you need to choose what effect you want to create in your reader, and then manipulate your scenes and character development accordingly. For an excellent overview of pacing in fiction, read this post by K.M. Weiland.
Note, however, that I didn’t say ‘narrative of story’ in my opening paragraph. That’s because nonfiction benefits just as much from effective pacing as does fiction. Think for a moment about the biographies, how-tos, memoirs, travel pieces, or any other nonfiction you’ve read recently. Did they keep your attention? Did the author tease you with promises of solutions or details and then slowly reveal them, building momentum so that you couldn’t put it down? Or did you plod through pages of dry facts and lose interest to the point of feeling like the reading was a chore?
That’s the tipping point for me as a writer, whether I’m penning fiction or non-fiction: losing interest. Even when I’m the one doing the writing, I try to think like my reader.
Am I getting bored with a litany of facts? Then break it up. Focus on one fact and bring it to life with a concrete, preferably colorful, example, then note the other facts briskly. For instance, in my forthcoming memoir, I list items not to do with a new puppy. I got bored with listing the list, so I described how I totally did the wrong thing with our dog concerning the first point, then simply noted the remaining ones. Making a list personal will engage your reader and create momentum to continue reading.
Use dialogue. Even if it’s imaginary, it can help your reader place themselves in the same situation.
Use a metaphor or simile to make your explanation more understandable. Details enrich writing of every kind.
Keep focus. Confine paragraphs to one point, then move on – visual cues like breaking up text help your reader follow your organization and your pace of developing thought. You don’t want your reader lost in the middle of a page-long paragraph, because they might decide it’s not worth finding their way out.
In fact, write your nonfiction like you’re telling a story with its own beginning, middle, and end, and you might hear that awesome compliment: “It was such a good book, I couldn’t put it down, even though it was nonfiction.”
Timing really is everything.