It recently occurred to me that many personality traits stem straight from ego wounds. Someone calls you “stupid” so you develop “the intellectual” aspect, reading everything you can get your hands on. Someone calls you “weak” and suddenly the “workout” guy appears desperate to tone his muscles and build his strength.
When I was little and my mom constantly talked about wanting to die, I developed “manic, sarcastic” girl, who took nothing seriously, in order to defend myself. The downside of “manic, sarcastic” girl was that she pissed a lot of people off with her unedited sharp tongue and outspokenness. Also, she tended to get a lot of driving tickets.