The book contains a lot of examples of the components of each principle. I also end each chapter with an activity for practicing the topics covered. You will learn much about what you can do to tap into how people think and behave in order to position your game as something they would use. That said, I personally have struggled with addiction issues, and I try to stay away from recommending having people addicted to anything becoming a goal. I think we can use these principles to help make life easier and/or more enjoyable for many of our users.
Thanks for the question!
This guy is skipping without a rope. At least, that's what this tiny ad said: