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Think you have untapped powers? You do. In this work, originally published in 1913, one of the earliest New Age thinkers asserts that not only do we all have the power to achieve greater wisdom, creativity, productivity, and fulfillment, but that this growth is possible for anyone who is willing to concentrate. Foreshadowing the modern field of positive psychology by decades, Larson provides illuminating information about how the brain works in tandem with the body and the emotions, and walks you through exercises that help you gain mental strength and agility, ultimately improving your thinking-and your life. American New Thought pioneer CHRISTIAN DAA LARSON (b. 1874) is the author of the well-known Optimist Creed and published several important works of spiritual science, including Mastery of Self, In the Light of the Spirit, and The Great Within.