Ruiz explains that this agreement is the most important, but it is the most difficult to respect.  For this agreement, Ruiz first analyzes the word “irreproachable”. The word impeccable comes from the Latin word peccatus, which means “sin,” and the “im” at the beginning of irreproachable is the Latin prefix meaning “without.” By making a pact with these four key agreements, an individual can dramatically influence the amount of happiness they feel in their life, regardless of external circumstances.  The third agreement describes whether assumptions are made, how they lead to suffering, and why individuals should not participate in them. Assuming what others think, it can cause stressful and interpersonal conflicts, because the person believes that their acceptance is a representation of the truth.  Ruiz believes that one solution to overcome the act of acceptance is to ask questions and ensure that communication between those involved is clear.  Individuals can avoid misunderstandings, sadness and drama by not making assumptions.  Whatever happens around you, don`t take it personally. Nothing others do is because of you.
It is up to him to choose. All men live in their own dreams, in their own minds; They are in a completely different world than the one we live in. If we take something personal, we assume that they know what`s in our world and that we`re trying to impose our world on our world. Even if a situation seems so personal, even if others insult you directly, it has nothing to do with you. What they say, what they do, and the opinions they give correspond to the agreements they have in their own minds. If you take things personally, you make easy prey for these predators, the black magicians. They can easily tie you up with a small opinion and feed you what they want, and because you take it personally, you eat it. All that said, if you`re befriending someone whose words or actions are harmful to you, it`s healthy to set boundaries, set boundaries, and honor yourself. You may experience great feelings, and they are all real and valid.