when I was a teenager, the dominant criticism my closest friends had of me was that I was too arrogant, and they were right. I was too caustic, abrasive, eager to nitpick, quick to criticize, and I was way too certain of myself. I spent my entire 20s trying to correct for this
the social niceties stuff were relatively trivial for me to address. learning to be gracious, patient, I could manage all of that. But "too certain of oneself" goes order of magnitudes deeper. It goes into philosophical territory about risk, certainty, the nature of knowledge
I very seriously experimented with beliefs like "almost everything I know is wrong to a degree I do not understand", "my mental models are contaminated beyond repair", "I have been indoctrinated and need to be deradicalized", I subjected myself and my mind to radical rewrites
Over 8+ years I wrote over 800,000 words of introspective journaling, investigating my own mind, investigating the investigator. I read & talked to thousands of people from around the world to seek out different ways of thinking, seeing, being, believing, knowing, understanding
I tried to think of myself as a robot that needed debugging. I actually made substantial progress with that
I tried to think of myself as a garden that needed tending. I made substantial progress with that
I tried not to think of myself at all, and I transcended progress itself