Martin Seligman Psychologist examines healthy states of mind such as happiness

Martin Seligman is the founder of positive psychology, a field of study that examines healthy states, such as happiness, strength of character and optimism

https://www.ted.com/talks/martin_seligman_the_new_era_of_positive_psychology?utm_campaign=tedspread&utm_medium=referral&utm_source=tedcomshare