Good things come in threes.
Messages should have a beginning, a middle and an end. In speeches you should tell them what you're going to say, say it and tell them what you've said. And in paragraphs you should organize your information by topic, development and resolution.
One, two, three.
Consider the following paragraph about how demands for greater productivity are taking a toll on workers, adapted from an article by Alana Semuels:
"In their zeal to make sure that not a minute of time is wasted, companies are imposing rigorous performance quotas, forcing many people to put in extra hours, paid or not. As a result, many workers are wondering how much longer they can keep up the breakneck pace. Video cameras and software keep tables on work performance, tracking their computer keystrokes and the time spent on each customer service call. The relentless drive for efficiency at U.S. companies has created a new harshness in the workplace."
Hard to follow, isn't it? That's because I scrambled the order of its four sentences.
To create coherence and flow in your writing, organize your paragraphs into three components: topic, development, resolution.
Following that formula, see if you can number the four sentences of the scrambled paragraph in the order in which they originally appeared. If you're reading this column on hard copy, you can write on your newspaper. If you're reading this online, it's fine to find an indelible marker and write right on your screen.