This is my humble opinion of how it tends to happen, re: Charlton.
The beginning of the Destiny phase is simply the existence of traits that are necessary but not sufficient for genius: such as intelligence, conscientiousness, and associative horizon (typically in the form of Asperger’s syndrome). Then life happens. For the two necessary addictions to take hold, there are two plausible scenarios. 1) The budding genius is upper class and insulated, so that the attendant dysfunctions (roughly equivalent to a cocaine addiction) are not particularly harmful. Or 2) the budding genius becomes an antisocial pariah and is ostracized to live in squalor except for occasional charity from admirers (e.g. Niels Abel).
The former is a variant of typical upper class prestige competition and is less interesting, psychologically, than the pariah. The pariah’s journey from Destiny to Quest begins in a condition equivalent to paranoid schizophrenia, as a psychological defense against small acts of ostracism. This kicks off a vicious feedback loop of misunderstandings between the pariah and the people around him, resulting in poverty for the pariah. This leads to a state of autistic despair, because the pariah either fails in cognitive empathy or refuses to navigate the antisocial morality that social climbing requires. E.g. “I’m starving because nobody cares, because people are shit.”
This emotional disassociation leads to intellectual solipsism, which is where the cognitive process begins to rebuild itself according to more empirical premises. (During this period, I was an agnostic for a full week and spent that week lying in bed.) The distilled empiricist takes on the painstaking task of building a worldview that is functional enough to survive. This is where the addiction to insight generally takes hold, because the pariah is dopamine-starved at precisely the moment when producing insights is also the most effective use of brainpower. The insight addiction produces an intellectual with an interest in gaining understanding and wisdom, which in turn eventually produces an interest in the most profound expressions thereof: art. This is due to the progression of the addiction, such that the “fix” must be more and more intense over time.
Believe it or not, people are attracted to great art because it bypasses the political mind and goes straight to the perceptual/worship center of the brain. Thus, geniuses who go through the full metamorphosis (without interruption of development!) will often gather many admirers and finally attain some success through artistic expression of intellectual insights. This final step is what we call “genius”.
Depending on how much time is left in the genius’s life, they may enjoy some of their success. This is the period where hard work and discipline are the major elements for unpacking and disambiguating the profound insight gained from many years of searching for the truth.
tl;dr- The substages leading the pariah type from Destiny to Quest are Paranoia, Despair, Solipsism, Empiricism, Intellectualism, Art, Genius.