I been thinking for a while and I'm not sure I've learn anything remarkable.
As I've grown poor and in an awful family , maybe that money is important, and a normal family makes life much easier.
Also that a mix of skepticism, knowledge and intuition has been useful to avoid bad advice. I have to thank the Internet for this. It probably saved me from being homeless, a drug addict or in jail.
Internet in the early 00s was quite a different place. It was for nerds, but also was full of sane people that helped me just through imitation.
I still feel I need better income to feel confortable, and better connections, but maybe I'm too lazy or risk averse.
IDK I'm +30 and I don't really feel I've got any lessons from life that I could say it's settled knowledge.