Money has no utility to me beyond a certain point.

Well, I think the biggest mistake is not learning the habits of saving properly early. Because saving is a habit. And then, trying to get rich quick. It's pretty easy to get well-to-do slowly. But it's not easy to get rich quick.

Do not save what is left after spending, but spend what is left after saving.

Money is not everything. Make sure you earn a lot before speaking such nonsense.

I never attempt to make money on the stock market. I buy on the assumption that they could close the market the next day and not reopen it for five years.

If you don't find a way to make money while you sleep, you will work until you die.