Sasha Heinz, PhD, MAPP, a developmental psychologist and life coach, is an expert in positive psychology, lasting behavioral change, and the science of getting unstuck. In her private coaching practice, she helps women cultivate greater psychological flexibility and mental fitness, and live a life that lines up with their values. Heinz received her BA from Harvard, her PhD in developmental psychology from Columbia, and her master’s in applied positive psychology from the University of Pennsylvania, where she also served as a faculty member.