Keating entered the Cistercian Order in Valley Falls, Rhode Island in January, 1944. He was appointed Superior of St. Benedict's Monastery, Snowmass, Colorado in 1958, and was elected abbot of St. Joseph's Abbey, Spencer, Massachusetts in 1961. He returned to Snowmass after retiring as abbot of Spencer in 1981, where he established a program of ten-day intensive retreats in the practice of Centering Prayer, a contemporary form of the Christian contemplative tradition.
He is one of three architects of Centering Prayer, a contemporary method of contemplative prayer, that emerged from St. Joseph's Abbey in 1975. Frs. William Menninger and Basil Pennington, also Cistercian monks, were the other architects.
n 1984, Fr. Thomas Keating along with Gustave Reininger and Edward Bednar, co-founded Contemplative Outreach, Ltd., an international, ecumenical spiritual network that teaches the practice of Centering Prayer and Lectio Divina, a method of prayer drawn from the Christian contemplative tradition. Contemplative Outreach provides a support system for those on the contemplative path through a wide variety of resources, workshops, and retreats.
Fr. Keating currently lives at St. Benedict's Monastery in Snowmass, Colorado.