Today, I had a very pleasant distraction. One of my students missed the previous session of the Writing for Young Adults course I teach in Amsterdam. I met her in a restaurant nearby to bring her up to speed. The subject of that session was ‘Keeping Up the Tension’ and it tackled what is often referred to as the sagging middle. That’s right, the sagging middle. It’s that huge part between a writer’s phenomenal, gripping beginning and the staggering, breathtaking end of his novel. In a 3-act structure that middle would approximately cover 50% of the book. A hefty part if your readers have to force themselves to keep their eyes open and not nod off. Flesh out the middle is what writing books…