Something I think was brilliantly put in words:

"A person who, like everybody else in the world, needed other people in order to be happy. But other people were so difficult.  They reacted in unpredictable ways, they surround themselves with defensive walls, they behaved just as (anybody else), pretending they didn't care about anything.  When someone more open to life appeared, they either rejected them outright or made them suffer, consigning them to being inferior, ingenuous"
Paulo Coelho, Veronika Decides to Die.