When it comes to fund managers and market strategists, this year's hero usually turns into next year's zero.

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.

You have to understand what market history looks like. What market history tells you is that the very, very best investments are made when things look the worst.

The definition of investment is the deferring ofpresent consumption for future consumption. So, you dohave to be willing to defer. And there are a couple of tricks that you can use to save money. One of them is simply to pay yourself first.

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.

Bluntly put, there's no chance that your doctor, dentist, or attorney is a high-school dropout. Your stockbroker, however, just might be.

While it is probably a poor idea to own actively managed funds in general, it is truly a terrible idea to own them in taxable accounts... taxes are a drag on performance of up to 4 percentage points each year... many index funds allow your capital gains to grow largely undisturbed until you sell... For the taxable investor, indexing means never having to say you're sorry.