A positive mindset may be more important for staying healthy than previously realized. A new study confirms that psychological well-being can have a very real impact on physical health. The research was focused on psychological interventions that were specifically designed to boost emotional well-being. The study revealed that both in-person and online interventions positively impacted the physical health of the participants. Study co-author Kostadin Kushlev is a professor in the Department of Psychology at Georgetown University. "Though prior studies have shown that happier people tend to have...