Michael V. Pantalon, Ph.D., is the author of Instant Influence, How to Get Anyone to Do Anything Fast. The book outlines six steps to persuade people to make changes in their work, their lives, or for themselves. You may want to master the steps as outlined by the author in detail, but what was interesting to me is why they work. Pantalon spends some time talking about the science of motivation, and his conclusions may surprise you.
One of his most important premises is that everyone already has all the motivation they need to change.