It's hard to hear yourself think in today's culture, much less refresh your soul. Sights and sounds—from ads placed on toilet stall doors to loud ringtones or cars pulsing with bass—assault us every day. Peace and quiet seem out of place in 21st-century everyday life. It's time to mute the cacophony. Meaningful and serene contemplative silence is possible. And it doesn't require an expensive trip to a spa. "We yearn for rest, and our souls hunger to be fed, yet we seldom give ourselves permis...