we must have recurring reunion between ego and Self in order to maintain the integrity of the total personality, otherwise there is a very real danger that as ego is separated from Self the vital connecting link between them will be damaged. If this happens to a serious extent we are alienated from the depths of ourselves and the ground is prepared for psychological illness.
— Edward F. Edinger
Edinger is describing something the soul knows before the theory does: that the center cannot hold if the ego keeps pulling toward the surface and staying there. Reunion is not a therapeutic technique — it is a structural requirement, like returning to breathable air. And the word "recurring" matters more than it first appears. This is not a once-accomplished reconciliation but a rhythm, a movement that must be repeated because the ego's tendency is always toward consolidation, toward the managed life, toward the story it can tell about itself without interruption.
What runs underneath the managed life is usually a specific wager — that if the ego is competent enough, oriented enough, spiritually credentialed enough, the depths will not need to be visited. The alienation Edinger names is not simply forgetting the unconscious; it is the result of that wager being honored too consistently. The ground is prepared for illness not by catastrophe but by the ordinary, successful execution of a life that has no downward movement left in it. What breaks, when it breaks, is the link — and what the break discloses is that the depth was there all along, patient, unvisited, speaking now in the only register the ego cannot manage away.
Edward F. Edinger·Ego and Archetype: Individuation and the Religious Function of the Psyche·1972