In Modern Man in Search of a Soul, C.G. Jung examines how psychic archetypes guide the individual psyche towards wholeness:
When first I took this direction I did not know where it would lead. I did not know what lay hid in the depths of the psyche—that region which I have since called the "collective unconscious", and whose contents I designate as "archetypes." Since time immemorial, eruptions of the unconscious have taken place, and ever and again they have repeated themselves. Consciousness did not exist from the beginning, and in every child it has to be built up anew in the first years of life. Consciousness is very weak in this formative period, and history shows us that the same is true of mankind—the unconscious easily seizes power.