CNBC.COMElissa Epel
CNBC Make ItElissa Epel, PhD, is a health psychologist and longevity researcher. She is a professor at University of California, San Francisco and the director of UCSF's Aging, Metabolism and Emotion Center. In her new book, "The Stress Prescription," she distills decades of research into science-based techniques that can help you harness your stress. Follow her on Twitter @Dr_Epel.