The call is to leave a certain social situation, move into your own loneliness and find the jewel, the center that’s impossible to find when you are socially engaged. This is the departure when the hero feels something has been lost and goes to find it…
The first step, detachment or withdrawal, consists in a radical transfer of emphasis from the external to the internal world… a retreat from the desperations of the waste land to the peace of the everlasting realm that is within. But this realm, as we know from psychoanalysis, is precisely the infantile unconscious. It is the realm that we enter in sleep.
We carry it within ourselves forever…all the life- potentialities that were never managed to bring to adult realization, those other portions of our self, are there; for such golden seeds do not die.
Joseph Campbell, A Joseph Campbell Companion: Reflections on the Art of Living.