a) Those traumatized, after hard living experiences and most of times a disastrous childhood surround of multiple kind of abuses, just in-house (domestic) or within the educational system (teachers/ other students....etc..). They spend most of their lives deeply depressed, feeling unworthy without targets in life and stuck in their memories, painful past.
Many of them have a dramatic and painful end, their self esteem is severely deteriorated and they never got the way of a proper self improving, they cannot feel the warmth of external sources, cold inside.
b)Those who realized what to be gifted really mean, they consider themselves pure genius and the ultimate step in human evolution, some of them expect to summon the whole nature at their shoe heels. Square and pragmatic, strong believes, they claim never are wrong and the have to power of the truth, anything else does not matter. They continuously need to demonstrate how good they are. (many times, that is a fiction created by their supporters, like many sects across the human history)

c) Finally those who work hard on building a balance. They spend their lives getting the most of things, learning, paying attention not real need of fame but just their own wellness, in cases the help to build a positive surrounding, all around them. They don't need to shout how intelligent they are, the way they live is a proper and real demonstration. Many of them are wise.

I can be accused of being too strict in the way I describe the characters, even because I classify in such a fashion, but in the way 2 humans are not identical we share commons features, some of them dominant in our own psyche, other working in a complementary way. (so many possible combinations, whatsoever).
It is possible to evolve from one character into another.. Always keeping the same psychological roots (unique for the individual) but after certain and many times shocking/traumatic experiences, the trigger can happen to change into a completely different one.

Thanks

Gonza.