50 some-odd years ago I was reading anything I could find by the Swiss psychiatrist C. G. Jung (d.1961). His doctrine of "Individuation" spoke to the need to open up to the latent contents of the Unconscious Mind, and to assimilate what was found there into the realm of the Self. With this accomplished the person involved had become an "In-dividual": no longer driven by psychic forces beneath the horizon of awareness.
It strikes me that this process of "Individuation" is very close to the change of being that is sought in the "Enlightenment" of Zen, with the singular difference that the Zen view incorporates all of life into the fellowship of Awareness,
