Metanoia

Metanoia (from the Greek μετάνοια, metanoia, changing one's mind) in the psychological theory of Carl Jung denotes a process of reforming the psyche as a form of self healing, a proposed explanation for the phenomenon of psychotic breakdown. Here, metanoia is viewed as a potentially productive process, and therefore patients' psychotic episodes are not necessarily always to be thwarted.

In Carl Jung's psychology, metanoia indicates a spontaneous attempt of the psyche to heal itself of unbearable conflict by melting down and then being reborn in a more adaptive form. Jung believed that psychotic episodes in particular could be understood as existential crises which were sometimes attempts at self-reparation. Jung's concept of metanoia influenced R. D. Laing and the therapeutic community movement which aimed, ideally, to support people whilst they broke down and went through spontaneous healing, rather than thwarting such efforts at self-repair by strengthening their existing character defences and thereby maintaining the underlying conflict.

Etymology
The term derives from the Ancient Greek words μετά (metá) (meaning "beyond" or "after") and νόος (noeō) (meaning "perception" or "understanding" or "mind"), and takes on different meanings in different contexts.