One of the original books with this title. Copied, but in my opinion, none as accessible and user-friendly as this one.

The key to life-long self-control: putting yourself in charge of how you think, how you feel and how you behave. Controlling how you think will determine your beliefs, your values and the way you process information. Controlling how you feel will allow you to be the one who decides your emotions and the way you respond to the events in your life. Controlling your behavior will help you to avoid the missteps that cause you sorrow and to do the things that bring you joy. "Human happiness is founded upon spiritual behavior." Spiritual Intelligence empowers you to assert self-control and achieve personal happiness.