I refer you to the following entitled “The Dangers of Centering Prayer” right here on
Catholic.com
catholic.com/thisrock/1997/9711fea1.asp
And excerpt: "Centering prayer originated in St. Joseph’s Abbey, a Trappist monastery in Spencer, Massachusetts. During the twenty years (1961–1981) when Keating was abbot, St. Joseph’s held dialogues with Buddhist and Hindu representatives, and a Zen master gave a week-long retreat to the monks. A former Trappist monk who had become a Transcendental Meditation teacher also gave a session to the monks.
Many people assume centering prayer is compatible with Catholic tradition, but in fact the techniques of centering prayer are neither Christian nor prayer. They are at the level of human faculties and as such are an operation of man, not of God. The deception and dangers can be grave.
Centering prayer differs from Christian prayer in that the intent of the technique is to bring the practitioner to the center of his own being. There he is, supposedly, to experience the presence of the God who indwells him. Christian prayer, on the contrary, centers upon God in a relational way, as someone apart from oneself. The Christian knows a God who is personal, yet who, as Creator, infinitely transcends his creature. God is wholly other than man. It is also crucial to Christian prayer that God engages man’s whole being in response, not just his interior life. In the view of centering prayer, the immanence of God somehow makes the transcendence of God available to human techniques and experience."