With books that make you feel stupid, you get smarter at any time of your life.
You should be reading a difficult book to understand for the current use. Difficult books makes you feel like you're stupid, but you actually get smarter.
You feel like. The older you become, the more obvious the trade-off between health, wealth, and happiness will come. You need, just need to look at society and to understand why extreme behaviors are getting rewarded and you can highly view what life has anything to do with that.
That's why you see so many successful and wealthy people who are already struggling with mental health, with their marriage, with their kids, with loneliness because that is the price they paid to get where they are.
They went fast and far, but they went alone.