Michael L. Yergin is an author, life coach, business consultant, and happiness guru. He has published four books and is a veteran broadcaster and relationship expert, as well as a lecturer on posit...vizualizați mai multeMichael L. Yergin is an author, life coach, business consultant, and happiness guru. He has published four books and is a veteran broadcaster and relationship expert, as well as a lecturer on positive psychology. Yergin divides his time between Chicago and Phoenix.vizualizați mai puține