This document discusses positive psychology and its focus on optimism, strengths, and improving situations rather than dwelling on weaknesses or what is lacking. It notes that positive psychology takes a constructive meliorist approach, focusing on gaining more of what is wanted rather than just reducing problems. The origins of positive psychology are outlined, from early 20th century psychologists advocating for understanding health and strengths, to Martin Seligman launching the positive psychology initiative in 1998 to complement the traditional focus of mainstream psychology on mitigating problems.