Wise words, and I can't help but wonder.
18 y/o HS graduation. Going to live until I die, know about everything worth knowing, what would I have heard?
None of that or anything else. I stopped listening to lectures at six. Anything past that was ignored. My character was set, what I would do was predictable and the only thing to which I responded unpredictably was affection or immediate negative consequences.
Now, that's my loss, and my mistakes, and I paid the price. And I don't think I was unusual - by 6 the person has been created, and the rest is simply expressing it.