From Ancient Greek μετάνοια (metánoia, “repentance”), literally “afterthought,” a compound of μετά (metá, “after, with”) and νοέω (noéō, “to perceive, to think”).
1. A fundamental change of mind.
2. (Theology) Conversion, reformation, or repentance.
3. (Psychology) The process of experiencing a psychotic "breakdown" and subsequent, positive
psychological rebuilding or healing.