Dr. Joseph Murphy was an Irish-born minister, teacher, and writer whose books helped define the modern literature of positive thinking, New Thought, spiritual self-help, and subconscious-mind teaching. Born in 1898, Murphy became widely known for presenting practical methods of prayer, affirmation, visualization, and mental discipline to a broad popular audience. His central message was that the subconscious mind responds to dominant beliefs, images, emotions, and expectations, and that changing one's inner life can change one's experience of the world.Murphy's best-known work, The Power of Your Subconscious Mind, became one of the enduring classics of twentieth-century self-help literature. Across books such as Believe in Yourself, he emphasized faith, imagination, prosperity, healing, confidence, and the spiritual laws of mind. His writing continues to appeal to readers of New Thought, metaphysics, affirmation, manifestation, positive thinking, and practical spirituality.