If the heart wanders or is distracted, bring it back to the point quite gently -- and even if you do nothing during the whole of your prayer but bring your heart back, though it went away every time you brought it back, your time would be very well employed.
An individual sitting in an emergency waiting room noticed a man in a wheel chair in considerable pain with his wife by his side. For a half hour the couple never exchanged a word; they just held hands, looking intently at each other. Once or twice the woman patted the man's face. The person watching said the feeling of love was so tangible in the room that she felt she was sharing their silent communion. Their silent love was also joyful and portrayed the fullness of a human relationship. That's what spiritual silence is all about. Love does not necessarily require words. It often requires silence.
~ from "Contemplative Silence" by Paul Harris in Schola (March 2001)