In the days leading up to the new year, many of us turn our thoughts to making a few key changes in our lives. Maybe we aspire to take better care of ourselves, eat a healthier diet, and get more exercise to enhance or improve our lives through making changes in our routines or imposing strict rules on ourselves. While ambitious diet, exercise, or other lifestyle changes often set even the most determined individuals up for a difficult challenge, there is a little-known life-enhancing strategy—or lifestyle hack—that can positively impact our relationships, our mental and........