i would change a couple of things in my upbringing. One of them would be financial education on dealing with money, debt and investment, because let's face it, that's what life is about. I taught myself all about finance.
The other is life's ups and downs. Basically if someone like your parents taught you that there will be moments of happiness and moments of sadness, which don't last long, and how to deal with them, we wouldn't take happiness for granted and in sadness we would try our best and understand that it is for the short term.
Excellent question by the way.