Jung once said that ‘compulsion is the great mystery of human life’ — an involuntary motive force in the psyche ranging all the way from mild interest to possession by a diabolical spirit.
This passage anchors the entire depth-psychological treatment of compulsion in Jung’s own formulation, situating it as a universal spectrum from interest to demonic possession, and links it directly to Freud’s parallel concept of the compulsion to repeat.
, The Inner World of Trauma: Archetypal Defences of the Personal Spirit, 1996thesis