Libido reorientation names the process by which psychic energy is redirected from one object, zone, or functional sphere to another — a concept that sits at the productive fault-line between Freud’s economic model and Jung’s broader energic psychology. Freud established the hydraulic metaphor: libido withdrawn from objects reinvests the ego or migrates to substitute formations, a movement observable in paranoia, narcissism, and neurosis alike. Jung pressed the concept further, arguing that libido is not exclusively sexual but represents a general life-energy capable of being channelled through symbol, ritual, and analogy-building into wholly new functional domains — a process he termed ‘canalization.’ The tension between these positions is irreducible: where Freud’s reorientation remains largely defensive or pathological (repression, regression, narcissistic withdrawal), Jung’s version is potentially creative and individuating, the engine of cultural achievement and spiritual development. Samuels locates the crux in Jung’s insistence on the ‘upward’ movement from instinct to value-making, while Hillman critiques Jung for stripping libido of its sensuous, Eros-laden character in the very act of generalising it. Neumann extends the framework developmentally, showing that reorientation of consciousness is the psychological task at every major life-threshold. The concept thus spans clinical, developmental, cultural, and philosophical registers, making it one of the most contested and generative terms in the depth-psychological lexicon.