His best-known book, The Four Agreements, was published in 1997 and has sold about 10 million times in the United States and has been translated into 46 languages. The book advocates the personal freedom of convictions and agreements we have made with ourselves and with others, which create use and unhappiness in our lives.  It was broadcast on the television show Oprah.  The four chords are: “If you feel good, everything is good around you, if everything around you is great, everything makes you happy. You love everything around you because you love yourself. Because you love who you are. Because you`re happy with your life. You are happy with the film you are producing, happy with your agreements with life. You`re at peace, and you`re happy. You live in this state of happiness, where everything is so wonderful, and everything is so beautiful. In this state of happiness, you make love all the time with everything you perceive.
“Don Miguel Ruiz, The Four Accords With this agreement, Ruiz speaks with the culture of the 21st century. People are easily offended by the words and actions of others because they consider solopsiste that they are personally the center of the universe. The solopsist believes that everyone acts on the inspiration of the solopsist. Ruiz says that this may not be the case, that people are motivated only by their own inner worlds. If one considers the action of others as a response to the mind of the other, one is free to brush any insult, because it is just a projection of the pain of the other. This book is not just a reading that you throw away, there is always a reference back when you are in certain challenges. I think most people are fighting with Agreement 2, whether it`s at work or in person. It is not realistic to expect that we will be able to change our thinking from day one and that we can follow all agreements perfectly, or even that we should. However, we can choose the agreements that happen to each of us personally and try to do our best to follow them. In doing so, we can relax knowing that we are doing everything in our power to develop personal freedom and happiness day after day.
In this book, Ruiz finds that one of the four agreements that the individual must make with himself in order to become wise is not to make assumptions. It includes them on a warning basis to avoid possible problems such as misunderstandings. He believes that the easiest way to prevent adoption is to ask more questions. By “agreements,” Ruiz means the assumptions that each human being has made about the nature of life and reality. He points out that not all conclusions are correct, despite the lengths you have held or the reasons why you have decided to believe it.