This chapter continues the history of the New Thought movement. Prominent philosophers like Ralph Waldo Emerson and William James emphasized the importance of positive thinking and self-belief for personal growth and empowerment. As the New Thought movement gained momentum into the twentieth century, it evolved from healing to promote a holistic lifestyle that encouraged rejecting negativity and fostering affirmations, while also adapting to America’s industrial and capitalist ethos by linking positive mindset to financial success. Norman Vincent Peale further revitalized the movement with his book The Power of Positive Thinking, which merged motivational concepts with Christian teachings, but attracted criticism for oversimplifying spirituality and fostering materialistic views, a narrative that continued to evolve in the late twentieth century with the rise of self-help literature like Rhonda Byrne’s The Secret, which popularized the “law of attraction” despite scrutiny for pseudoscientific claims.