What is the author's tone in the book, The Four Agreements?

“The Four Agreements” by Don Miguel Ruiz is written in a casual and gentle style. Although the subject matter addresses issues that many self-help books focus on, this work is not over-burdened with unfamiliar psychological terms, otherwise known as psycho-babble. The term “agreements” in this “guide to personal freedom” has a slightly different meaning than what is commonly accepted. The agreements that Ruiz refers to are agreements with self that will lead to the personal freedom he promises.