Use the preface of the book to show the reader how her life will change for the better once her anger is under control. Build up her self-esteem by citing a few examples of people who have successfully worked through anger problems, but make it clear that she needs to commit herself in order to get the most out of your self-help books.
Help the reader identify his biggest anger triggers. Define both internal and external events, like emotional sources or uncontrollable things like traffic jams.
Show the reader how to make a list of the manifestations of her anger issues. These marks can range from general irritability and stress to physical violence and passive-aggressive behavior.
Focus on the different lifestyle changes that can help control a person's anger. Include relaxation tips and problem-solving methods. Dedicate an entire section of your self-help book to communication improvement for home, leisure and office life.
Write about a few different ways that the reader can change the way he thinks. This type of cognitive restructuring helps control the internal anger triggers, but it needs a clear method to be effective. Start with simple tips, like cutting profanities out of his vocabulary, and then work up to more advanced techniques, including how he can change his perception of the environment.
Explore different possibilities for publication of your anger management self-help books. Unless you already have a relationship with a publication company, expect this to be a long and fairly difficult process. Look into ways to publish and market your books online.