"Feel like you're on a treadmill that won't stop? Learn to step off and hit your stride. Not long ago Christine Carter, happiness expert at UC Berkeley's Greater Good Science Center, speaker, writer, and mother, found herself caught up in the busyness of modern life: too many conflicting obligations and not enough time, energy, or patience to get everything done. She tried all the standard techniques--prioritizing, multitasking, delegating--but found...