But I don't want to leave!The Hermit
Having won the ultimate boon, the hero of the monomyth, that archetypal story that underlies so many of the world's stories, may not want to return from their new bliss to the place they had left to win it. In their enlightened state, the task of bringing their knowledge back to the world may seem like a step backwards into the difficulties and trials they had just overcome.
Prof. Joseph Campbell: "The full round, the norm of the monomyth, requires that the hero shall now begin the labor of bringing the runes of wisdom, the Golden Fleece, or his sleeping princess, back into the kingdom of humanity, where the boon may redound to the renewing of the community, the nation, the planet or the ten thousand worlds. But the responsibility has been frequently refused. Numerous indeed are the heroes fabled to have taken up residence forever in the blessed isle of the unaging Goddess of Immortal Being."
In terms of the monomyth as a story, it would seem that after the ultimate boon the hero has already reached their zenith, that the main events are over. For the hero, they may feel that their own personal trials have ended. However, it is not until the hero brings their boon back to their old world to transform it that they become legendary. Many an enlightened monk may understand the ways of the universe and be content in their knowledge, but to it is when they spread their word that they create true peace. If the hero feels that they have reached a place of bliss but cannot accept that their bliss coexists alongside others sufferings, then they have accepted a false happiness. Their delusion of perfection is no better than the delusion of chaos they had fought to overcome through their trials.
For many, reaching a state of personal liberation would probably be the end of their life's work. In terms of the monomyth, which deals specifically with cultural concepts of heroism, the fact that that hero brings something back to their old world, i.e. frees their people or passes on their new found knowledge, is exactly what makes them a hero. For the reader of a story, the wish-fulfillment of seeing a character reach the height of their potential is surely exciting but almost anyone would agree that a true hero is selfless. A people remember someone or cherish the idea of someone who could or did something for other people.
In terms of the monomyth as a parallel to the development of the self, moving forward from a state of enlightened bliss back into the world of fussy people and stubborn ideals can seem laboring for a person, a chore. To go back to the place where they were before they ever sought a deeper meaning, one has to make a bridge between the two. A refusal of the call back to others and the world is accepting a false peace. In order for the enlightened individual to exist in the real world, they must share what they have learned with others so that they can bring their bliss inside out into the open for everyone to enjoy. And anyone who can do this becomes just as legendary in the hearts of their friends and families and even strangers as the heroes who win the golden fleece or slay the dragon.