Psychology after World War II became a science largely devoted to healing. It concentrated on repairing damage using a disease model of human functioning. This almost exclusive attention to pathology neglected the idea of a fulfilled individual and a thriving community, and it neglected the possibility that building strength is the most potent weapon in the arsenal of therapy. The aim of Positive Psychology is to catalyze a change in psychology from a preoccupation only with repairing the worst things in life to also building the best qualities in life. To redress the previous imbalance, we must bring the building of strength to the forefront in the treatment and prevention of mental illness.
The field of Positive Psychology at the subjective level is about positive subjective experience: well being and satisfaction (past), and flow, joy, the sensual pleasures, and happiness (present), and constructive cognitions about the future-optimism, hope, and faith. At the individual level it is about positive individual traits — the capacity for love and vocation, courage, interpersonal skill, aesthetic sensibility, perseverance, forgiveness, originality, future-mindedness, high talent, and wisdom. At the group level it is about the civic virtues and the institutions that move individuals toward better citizenship: responsibility, nurturance, altruism, civility, moderation, tolerance, and work ethic (Seligman and Csikszentmihalyi, 2000; Gillham and Seligman, 1999).