Positivity psychology is part and parcel of psychology. Being human includes both ups and downs, opportunities and challenges. Positive psychology devotes somewhat more attention to the ups and the opportunities, whereas traditional psychology - at least historically - has paid more attention to the downs.
Barbara FredricksonPositive people are able to maintain a broader perspective and see the big picture which helps them identify solutions where as negative people maintain a narrower perspective and tend to focus on problems.
Barbara Fredrickson