"How Rich People Think" is a book by Steve Siebold that examines the mindset and beliefs of wealthy individuals. Through anecdotes and interviews with millionaires, the book contrasts the thought patterns of the "middle class" with those of the "world class," emphasizing the importance of embracing abundance, taking calculated risks, and strategically leveraging one's talents and resources. Siebold argues that financial success is primarily a result of one's beliefs and actions, not luck or inherent intelligence, and offers practical advice and action steps for readers to shift their mindset and achieve greater wealth.