''Self-rejection is the biggest sin that you commit.'' ― Miguel Ruiz, The Four Agreements In his book The four Agreements Don Miguel Ruiz explains the main four agreements which we should make for a better personal freedom . The book offers a code of conduct based on ancient Toltec wisdom that advocates freedom from self -limiting beliefs . The four Agreements told by Don Miguel Are 1) Be Impeccable with your words what does that mean ? It means that words are more powerful than we think ,words can plant a idea in someone's mind like inception , words can incite fear in a person. so the author suggests to use words wisely while we speak . 2) Don't take anything personally As the first agreement is about the power of words so i true if someone uses that power of words on us in that case we should take nothing personally . Nothing others do is because of you.