Authentic Happiness” and “Learned Optim…ather of positive psychology is Dr. Martin Seligman, author of books like “Authentic Happiness” and “Learned Optimism” and the founder of the Positive Psychology Center at the University of Pennsylvania.A Guide To The Science Of Giving2.2K18Rafael SarandesesBrian PennieAug 13, 2018·1 min readAnother cracking book! His theory on learned helplessness is probably my favourite theory in Psychology!