It's bad enough that you have to take market risk. Only a fool takes on the additional risk of doing yet more damage by failing to diversify properly with his or her nest egg. Avoid the problem-buy a well-run index fund and own the whole market.

No one in his right mind would walk into the cockpit of an airplane and try to fly it, or into an operating theater and open a belly. And yet they think nothing of managing their retirement assets. I've done all three, and I'm here to tell you that managing money is, in its most critical elements even more demanding than the first two.

A fast food job, for most people, should be an entry level position. If you see no path for advancement beyond that, it's time to take a real fast look at your human capital and learn a skill that will make you more money.

Mutual fund manager performance does not persist and the return of stock picking is zero.

Do the math. Expect catastrophes. Whatever happens, stay the course.

99% of fund managers demonstrate no evidence of skill whatsoever.

There are two kinds of investors, be they large or small: those who don't know where the market is headed and those who don't know what they don't know. Then again, there is a third type of investor: the investment professional, who indeed knows he doesn't know, but whose livelihood depends upon appearing to know.