<p>In "Menticulture; or, the A-B-C of True Living," Horace Fletcher presents a pioneering exploration of mental cultivation and the philosophy of living well. This seminal work combines elements of self-help, psychology, and health, employing a distinctive, engaging style that encapsulates Fletcher's holistic vision of personal development. He emphasizes the importance of mental attitude and the power of thought in achieving a well-rounded, succe...