An individuatated individual is one in whom the unconsious and conscious are harmonized, and ego is decentralized (prerequisite and consequence). This is achieved by getting in touch with the unconscious, without allowing the ego to be overwhelmed by it. Ego has an explicit value. Functions which exist below the threshold of consciousness need to be brought above that threshold , repressed shadow contents need to be acknowledged, and the major archetypes of the collective unconscious (shadow, anima/animus, self) need to be discovered and related to, so that their influence can be consciously mediated, their concerns addressed, since they are quasi-autonomous subpersonalities in their own right.
Individuation is a life long process which is never really finished, though minimum prerequisites are achievable.
The individuated human being is just ordinary, therefore almost invisible.... His feelings, thoughts, etc., are just anybody's feelings, thoughts, etc. -- quite ordinary, as a matter of fact, and not interesting at all.... He will have no need to be exaggerated, hypocritical, neurotic, or any other nuisance. He will be "in modest harmony with nature.... No matter whether people think they are individuated or not, they are just what they are: in the one case a man plus an unconscious nuisance disturbing to himself -- or, without it, unconscious of himself; or in the other case, conscious. The criterion is consciousness.
(Jung, in Fadiman and Fragar, 1994, page 82)