Don Miguel Ruiz is a Mexican author and spiritual teacher best known for his book The Four Agreements. He was born in rural Mexico in 1952 and grew up in a family of healers and shamans. He studied to become a surgeon, but a near-death experience changed his life and he began to study and practice ancient Toltec wisdom. He has written several books, including The Mastery of Love, The Voice of Knowledge, and The Fifth Agreement. He has been a major influence in the self-help and personal growth movement, inspiring millions of people to live more conscious and meaningful lives.