Boundless Potential with Mark Walton

Boundless Potential author Mark Walton explains how middle- and older-aged individuals can reinvent themselves. Included: profiles of people who've done just that, including author-surgeon Sherwin B. Nuland; former AARP executive director Horace Deets; physical therapist Marion Rosen, who created the Rosen Institute in her late 50s; and former L.A. district attorney Gil Garcetti, who turned his photography hobby into a second career.