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.

If your broker or investment advisor is not familiar with the concept of standard deviation of returns, get a new one.

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.

The deeper one delves, the worse things look for actively managed funds.

You have to ask yourself, what are the things that matter to you most in your life? If you have to have a latte every day that'snice to have right now, but if you take that latte every day right now, you may wind up eating cat food when you are 70. And you have to decide which is worse.

The typical fund company services 401k plan participants in the same way that Baby Face Nelson serviced banks.

A decade ago, I really did believe that the average investor could do it himself. I was wrong. I've come to the sad conclusion that only a tiny minority, at most one percent, are capable of pulling it off. Heck, if Helen Young Hayes, Robert Sanborn, Julian Robertson, and the nation's largest pension funds can't get it right, what chance does John Q. Investor have?