New Thought, is a mind-healing movement that originated in the United States in the 19th century, based on religious and metaphysical thought.

Many adherents of New Thought consider themselves to be Christian, though generalizations about their relations to Christianity have been questioned.

The origins of New Thought may be traced to their reaction to the religious skepticism of the 17th and 18th centuries. The earliest proponent is thought to be  Phineas P. Quimby of Portland, Maine. He developed his concepts of mental and spiritual healing and health based on the view that illness is a matter of the mind. It was embraced first by the Methodist church, and then a Swedenborgian minister of the 18th-century.

Elements of New Thought may be traced to Platonism, based on the Idealism of the Greek philosopher Plato, who held that the realm of ideas is more real than that of matter. These ideas are also found in the views of the German philosopher G.W.F. Hegel, and the spiritual teachings of Eastern religions.

Though it is difficult to summarize New Thought beliefs, in 1916 the International New Thought Alliance agreed upon a purpose that embraces their central ideas:

To teach the Infinitude of God; the infinite possibilities of man through the creative power of constructive thinking, and obedience to the voice God’s indwelling presence which is our source of Inspiration, Power, Health and Prosperity.

They emphasize the immanence of God, the divine nature of man, the immediate availability of God’s power to man, the spiritual character of the universe, and the fact that sin, human disorders, and human disease are basically matters of incorrect thinking. Moreover, according to New Thought, man can live in oneness with God in love, truth, peace, health, and plenty. Many New Thought groups emphasize Jesus as teacher and healer and proclaim his kingdom as being available to mankind. With this comes the ability to live fully, have plenty, and the understanding that God desires these blessings for us.