Just as exercise, proper nourishment, and rest are essential to our physical well-being, so are such things as regular prayer, scripture study, Sabbath worship, partaking of the sacrament, and service to others necessary for our spiritual vigor. Without these continuing influences in our lives, our spiritual clocks wind down. – Dean L. Larsen, “Winding Up Our Spiritual Clocks,” Ensign (CR) November 1989