People like Martin E.P. Seligman

Martin Elias Peter Seligman is an American psychologist, educator, and author of self-help books. Seligman is a strong promoter within the scientific community of his theories of positive psychology and of well-being. His theory of learned helplessness is popular among scientific and clinical psychologists. A Review of General Psychology survey, published in 2002, ranked Seligman as the 31st most cited psychologist of the 20th century.