I feel that adolescence has served its purpose when a person arrives at adulthood with a strong sense of self-esteem, the ability to relate intimately, to communicate congruently, to take responsibility, and to take risks. The end of adolescence is the beginning of adulthood. What hasn't been finished then will have to be finished later.
“In a nation distracted by faction, there are, no doubt, always a few, though commonly but a very few, who preserve their judgment untainted by the general contagion. They seldom amount to more than, here and there, a solitary individual, without any influence, excluded, by his own candour, from the confidence of either party, and who, though he may be one of the wisest, is necessarily, upon that very account, one of the most insignificant men in the society.”