There are basically 3 components in personal development: Truth, Love and Power.
You have to discover what works for your own life.
Different people have different methods to understanding truth, love and power and the most important thing you must do is to focus on your own work – not compete with other people to see if you are more loving, truthful or more powerful than others.
The book lays down a very firm foundation for the readers to understand the root causes on the things that they do.