Don Miguel Ruiz (Wikipedia) Miguel Ángel Ruiz Macías (born August 27, 1952), better known as Don Miguel Ruiz, is a Mexican author of Toltec spiritual and neoshamanistic texts. His work is best-received among members of the New Thought movement that focuses on ancient teachings as a means to achieve spiritual enlightenment. Ruiz is listed as one of the Watkins 100 Most Spiritually Influential Living People in 2018. Some have associated Ruiz’s work with Carlos Castaneda, author of The Teachings of Don Juan.