For one, dissociation is a sign of deep hypnosis. Induce dissociation and more than likely you have induced deep hypnosis. Dissociation prepares subjects for future suggestions. If subjects accept the suggestions for dissociation, there is a very good chance they will also accept the suggestions that follow. Dissociation silences the conscious mind, which is ignorant of the reasons for the problems and unaware of any resolutions.
Dissociation is also advantageous when working with clients who have physical and emotional pain.
A dissociated mind can find comfort, peace and relief from a body that is racked with physical and emotional disease. Many nature CDs have multiple sounds. For example, the ocean wave CD has music, sea gulls and waves. Anytime you have more than two sounds, you have the makings for dissociation suggestions. You have two minds.