Well I came by some lessons accidentally.
On a simple browsing I find that these are essitional knowledge; yet I don’t know them.
Reason
Well it cames from my home experience.
My father can’t manage money well. He wasted a lot of money.
Also my father don’t have much career knowledge. He just follow others and, of course, it don’t go well.
My mother don’t choose her career by free will. But she can manage money.
However, my mother’s knowledge about money is just basic budgeting, and I find that boring.
Future
On a second thought, continous learing is the most important thing.