By figuring out whether you fall into the filtered or unfiltered camp and by knowing where your strengths are, you’re miles ahead of the average person in terms of achieving both success and happiness. Modern positive psychology research has shown again and again that one of the keys to happiness is emphasizing what are called “signature strengths.” Research by Gallup shows that the more hours per day you spend doing what you’re good at, the less stressed you feel and the more you laugh, smile, and feel you’re being treated with respect.