Lots of resources on this area from Father Thomas Keating in Contemplative Outreach Website (yes … it’s ok to learn from a Roman Catholic Cistercian “Trappist” priest)
My first introduction to contemplative prayer/centering prayer and Lectio Divina was during the Introduction to Christian Spirituality Course in Seminary by then Ms. Voon Choon Khing (now Dr. Voon and soon getting married I heard! Congrats …) I know some of my fellow future pastors was uncomfortable with it – some felt it was too Roman Catholic, others felt it’s too Zen-like. But, I found this way of prayer extremely helpful for a person like me who has difficulty “focusing” or “settling down” to pray. It helped me not only to “slow down” my breathing, and “center” my scattered throughts, i found I could “calm down” my often quick drumming heart beat and appreciate the silence where GOD can truly speak to me in a “still small voice”.