Gandalf returns a new wizard
Finally, we reach the last two stages of the archetypal hero's journey, Master of Two Worlds and Freedom to Live. It's been a long road for the hero, from when they first heeded the call to adventure, and they've successfully crossed the return threshold with the secrets of the underworld and themselves intact. What they get to enjoy now is a knowledge of both worlds, with the freedom to live in the material without fear of death.
MASTER OF TWO WORLDS
"Freedom to pass back and forth across the world division, from the perspective of the apparitions of time to that of the causal deep and back—not contaminating the principles of the one with those of the other, yet permitting the mind to know the one by virtue of the other—is the talent of the master. The individual, through prolonged psychological disciplines, gives up completely all attachment to his personal limitations, idiosyncrasies, hopes and fears, no longer resists the self-annihilation that is prerequisite to rebirth in the realization of truth, and so becomes ripe, at last, for the great at-one-ment."
Once the hero passes safely through their ordeals and defeats their demons, they gain an understanding of life that changes the world. If existence should be subjective, the ordeal the hero has been through so fundamentally changes their view of life that it changes life itself, in real and fundamental ways. Old tasks take on new meanings and everything is deeper and more both more mundane and amazing than it was before.
Knowledge of the possibility of safe return from the world over the threshold gives the hero the courage to undertake many more journeys. Bouncing back and forth between the "real" world and the "fantastic" one, the hero has special powers in those respective worlds which those that dwell in only one or the other do not. They are mages, wizards, magicians, bounding across the universe like giants.
FREEDOM TO LIVE
"The hero is the champion of things becoming, not of things become, because he is. He does not mistake apparent changelessness in time for the permanence of Being, nor is he fearful of the next moment (or of the 'other thing'), as destroying the permanent with its change. 'Nothing retains its own form; but Nature, the greater renewer, ever makes up forms from forms. Be sure there's nothing perishes in the whole universe; it does but vary and renew its form.'"
Freedom to Live means freedom from fear, obsession, hate, anxiety and all other emotions that had once distracted the hero from living in their present. Understanding the eternal-ness of things, the hero simply is, in their current moment, untroubled by the future or the past.
The hero's journey is one taken by anyone who has ever lived. It is the journey from fear to understanding, from youth to adulthood, from ignorant to true bliss. One goes through hundreds of journeys a day, from entering the subway to be taken to the belly of the beast, or passing the huge dog on the corner that looks meaner than a dinosaur. Should one master themselves, learn to exist in accord with their universe, and to defeat those forces that stand in the way of their realization, they can thereafter do whatever they choose. There is nothing standing in their way. They are not held back by time, self-doubt, or the doubt of others. And they are always ready to heed the next call to adventure, knowing that all of life is an adventure, and new knowledge can always be won if one is willing to venture deep enough into the caves holding the mysteries of life.