The Subconscious Mind
This is the 'deeper' part of the mind that is responsible for processing thousands of things at any one time and for storing everything we have experienced in our lives in differing degrees of importance. It sort of runs on 'Auto Pilot' without us even realizing it is doing so much. In this respect it is much like the hard drive of a computer that stores information that is accessed by the other parts of the computer/mind.
(Many other recognized institutions and researchers also refer to the 'unconscious mind' which is usually concerned with regulating the automated processes of the physical body. For the purposes of this article and also the school of belief that Mind Motivations and The Australian Academy of Hypnosis subscribes to, the subconscious mind encompasses the 'unconscious' mind also.