"Success Through a Positive Mental Attitude" is a self-help book written by Napoleon Hill and W. Clement Stone, first published in 1959. The book revolves around the central idea that having a positive mental attitude (PMA) is essential for achieving success and happiness in life. It argues that your mindset, whether positive or negative, directly influences your outcomes. By adopting a PMA, individuals can overcome obstacles, attract opportunities, and realize their goals.

The authors present practical techniques, stories of successful individuals, and inspirational insights to demonstrate how maintaining optimism, self-discipline, and persistence can lead to personal and professional achievements. The book emphasizes the power of belief, visualization, and a proactive approach to life's challenges.

It is considered one of the foundational works in the personal development genre, and its lessons continue to inspire readers to harness the power of their thoughts and attitudes to achieve success.