Perhaps the most wide spread example of [Christian mind cultivation] practice is the use of "arrow prayers" . . . In any moment one can employ a short phrase to turn the mind toward grace and remember the presence of God. I have come to call this practice "simple turning." A person claims a short prayer phrase, mental image or memory of closeness to God to call upon many times during the day. The individual may link this conscious expression to everyday activities — washing hands, entering a new situation, beginning a snack or meal, pushing back from the desk for a break, taking a deep breath. When I linked arrow prayers to moments of frustration, a transformative breakthrough occurred.

Robert Corin Morris in Wrestling With Grace