Source : Webster's Revised Unabridged Dictionary (1913)

New Thought \New Thought\
   Any form of belief in mental healing other than (1) Christian
   Science and (2) hypnotism or psychotherapy. Its central
   principle is affirmative thought, or suggestion, employed
   with the conviction that man produces changes in his health,
   his finances, and his life by the adoption of a favorable
   mental attitude. AS a therapeutic doctrine it stands for
   silent and absent mental treatment, and the theory that all
   diseases are mental in origin. As a cult it has its unifying
   idea the inculcation of workable optimism in contrast with
   the ``old thought'' of sin, evil, predestination, and
   pessimistic resignation. The term is essentially synonymous
   with the term {High Thought}, used in England.