Don Miguel Ruiz

Born in rural Mexico in 1952, the youngest of thirteen children in a family steeped in traditional folk practices, Miguel Ángel Ruiz attended medical school in Mexico City and practiced for several years as a surgeon. After surviving a severe late-night car crash in the 1970s, he left clinical practice to study with his mother, Sarita, and develop a body of teaching aimed at examining inherited social conditioning. Moving to the United States, he published The Four Agreements: A Practical Guide to Personal Freedom in 1997 (followed by The Mastery of Love in 1999 and The Fifth Agreement with his son Don Jose Ruiz in 2010), which spent more than a decade on the New York Times bestseller list after being featured by Oprah Winfrey in 1999.

The opening chapters of The Four Agreements describe childhood socialisation as a process of "domestication": through praise and punishment, children internalise a chorus of unspoken rules, perfectionistic standards and harsh self-judgments that continue to run long after the original adults have left the room. Against those inherited scripts, Ruiz proposes four compact daily commitments—to speak with integrity and without self-deprecation ("Be impeccable with your word"), to recognise that other people’s reactions reflect their own worldview ("Don't take anything personally"), to ask clarifying questions rather than inventing secret narratives ("Don't make assumptions"), and to calibrate effort honestly ("Always do your best").

Reading Ruiz responsibly requires separating the practical clarity of those four commitments from the book’s historical framing. Ruiz presents his teaching as "ancient Toltec wisdom," yet Mesoamerican historians and anthropologists note that the historical Toltec civilisation centered at Tula (roughly the tenth to twelfth centuries CE) left no written philosophical manuals resembling modern cognitive self-help; in twentieth-century publishing, "Toltec" became a popular neo-shamanic label following Carlos Castaneda’s books. Additionally, a mechanical reading of "Don't take anything personally" can be misused to dismiss legitimate feedback or excuse harmful behaviour in close relationships.

Held as contemporary cognitive and relational hygiene rather than ancient history, Ruiz’s third agreement—refusing to take an unverified assumption about someone’s silence or tone as a fact until you have asked a plain question—prevents a remarkable amount of unnecessary conflict.