From the moment we are born, we are seekers. Our culture obsessively promotes the pursuit of money, success and self-improvement. At the end of each activity-jammed day, though, we collapse into bed discouraged by everything we have not checked off on our to-do lists, in despair that whatever we have accomplished is never enough. Worse still, when our dreams become derailed by the inherent tragedies of life--job loss, financial peril,...