The Power of Positive Thinking believe and live successfully.” Peale's work came under criticism from various mental health experts, theologians, and academics. One general criticism against Peale's book was the lack of verified sources. "The Power of Positive Thinking" includes many personal anecdotes that the reader has no way of validating. The book includes stories about “a business executive”, “a man, an alcoholic”, “a famous trapeze artist”, “a friend of [Peale’s], a midwestern businessman”, and other unnamed individuals which cannot be verified from the information Peale presents with each anecdote. R. C. Murphy, a prominent psychiatrist based out of Tacoma, Washington, addresses another criticism of
Positive psychology in the workplace and forward-looking thinking that motivates workers to look-forward to more enjoyable tasks. Concepts of positive psychology like hope and altruism provide a positive work environment that influences the moods and attitudes of workers. Youssef & Luthans (2007) examined the effects hope, optimism, and resilience had in the workplace on employees’ job performance, job satisfaction, work happiness, and organizational commitment. Hope and resilience had a more direct effect on organizational commitment whereas hope had a greater impact on performance. Hope allows employees to be better at creating more realistic plans for completing task so as not to focus on the failure