It provides anecdotal "case histories" of positive thinking using a biblical approach, and practical instructions which were designed to help the reader achieve a permanent and optimistic attitude. These techniques usually involved affirmations and visualizations. Peale claimed that such techniques would give the reader a higher satisfaction and quality of life.
Covey presents an approach to being effective in attaining goals by aligning oneself to what he calls "true north" principles based on a character ethic that he presents as universal and timeless. Covey defines effectiveness as the balance of obtaining desirable results with caring for that which produces those results. He illustrates this by referring to the fable of the goose that laid the golden eggs. He further claims that effectiveness can be expressed in terms of the P/PC ratio, where P refers to getting desired results and PC is caring for that which produces the results.
The book's goal is to lead the reader to a more enjoyable and fulfilling life, helping them to become more aware of, not only themselves, but others around them. Carnegie tries to address the everyday nuances of living, in order to get the reader to focus on the more important aspects of life. It is now a world-famous, self-help book amongst many people.