The Science of Getting Rich, by Wallace D. Wattles (1910), is a foundational New Thought self-help book that teaches wealth creation through specific thought and action, claiming it's an "exact science" based on the Law of Attraction and creative thinking, influencing works like The Secret. It argues that a purposeful mindset, visualization, and disciplined, creative action, rather than competition, are key to attracting abundance and achieving full personal development.