You can invest in a total stock market or S&P 500 index fund in most employee retirement plans like a 401(k), 403(b), or 457(b), as well as individual retirement accounts like a Roth IRA, Traditional IRA, SEP IRA, and Solo 401(k). While I personally invest in a few individual stocks, I largely recommend that you avoid investing in individual stocks unless it’s with less than 10% of your total net worth.
I listened in admiration, and wanting to draw him out, that he might go on--Yes, Cephalus, I said: but I rather suspect that people in general are not convinced by you when you speak thus; they think that old age sits lightly upon you, not because of your happy disposition, but because you are rich, and wealth is well known to be a great comforter.

I’ve always considered $10M to be a pretty decent goal that could fund a lifestyle + raising children without worries. Unfortunately I’m 32 right now so I won’t be able to hit that by 35. With some diligent saving, reasonable investment returns and some good performance at work that might be possible by 40. If I hit $5M at 35 I would start considering quitting my job more seriously. I grew up in the midwest, if I went back to somewhere with a lower cost of living, $200k on a 4% withdrawal rate would probably be sufficient for a pretty good life. Especially if combined with a less stressful side job even if it only made $30k-$40k/year. I’m just very risk averse and even though I save far more than I spend, I’m motivated by money (yes I know that sounds terrible but it’s honest). So it would be hard for me to quit a highly lucrative job just as my earnings are really ramping and exchange it for the unknown of semi-retirement.

I want to be solidly in the middle – i.e. comfort zone, in the next 5 years. Right now I could hit the frugal FI button likely in the next year or so, but would not be happy there. I like the idea of the continuum. My in-laws are shooting for blockbuster FI, but they both own tech businesses that are doing well…so their reality differs slightly from mine.

Business owners represent a disproportionately large segment of the millionaire population. It's hard to believe, but there's a good chance that the biggest hardware store owner or plumber in your town has a net worth many times that of the highest-paid doctor. Part of the reason is a concept we've discussed called capitalized earnings. Another reason is one Dr. Stanley mentioned in his book. Doctors are pressured to buy status symbols to convince their patients they are successful. Not the plumber. He can put more money into his retirement accounts. Over decades, the result is millions in additional wealth for the guy who unclogged toilets instead of arteries. That's not something you learn about in school.
The author is opposed to charging a fee for assets under management (AUM). For a lot of beginning investors, AUM doesn’t work because they don’t have enough in assets. He makes the point that the manager will make money even if the assets go down. True. But the manager’s incentives are lined up with yours: the more your money grows, the more they get paid. That’s not necessarily the case with other way that fees are charged.