Maybe it's a Darwin thing -- you know, why we admire the cold executioner. Maybe on the Serengeti, it was that unflappable stalker who bagged the big game. But I doubt it.

Are you an "unemotional" investor?
You might think you are. But I'm not even sure there is such a thing. And if they do exist, are they really better than the rest of us? Fat chance. You're about to hear why.

But first, a confession. I get attached to things -- which explains my ridiculous wardrobe and a yard littered with old cars. (Which may, in turn, explain why, when I left for my cousin's wedding, my "pal" Danny quipped, "So your cousins are finally getting married?")

Good one. But it was also Danny who told me to dump my shares of Midway Games when the stock hit $12. I couldn't bring myself to do it ... then.

Is it time to sell?
I've made the case for not getting cute and jumping into and out of stocks. Today's plea is from the heart. I've been through a lot with my Midway over the past five years. You might even say we understand one another.

And if that seems a lame excuse to hold a stock, it sure doesn't hurt. After all, what do you get when you buy a stock? A piece of paper? You get a tiny piece of a company. And the more you get to know that company, the better off you are.

And brace yourself, because I'm going to take that one step further. The more in love you are with a company -- that is, the more deeply you care about its products, its people, its history, and the crosses it has to bear -- the more likely you are to know about it.

You may be a Fool ...
That's how I fell in love with Rule Breaker investing. Here was this guy David Gardner, who actually recommended AOL in 1994 -- because he used and loved the product. Same for Schwab (NYSE:SCH) and Best Buy (NYSE:BBY) and, more recently, Biogen Idec (NASDAQ:BIIB).

For the record, these stocks don't hit valuation screens. You don't find them searching Bloomberg or Baseline for companies that meet certain fundamental or technical criteria. To get in early and make a killing, you buy great companies like these on faith ... youfall in love with them.

And you stick with them in sickness and in health. (Trust me on this. I know you're picturing a 10-year chart for Oracle (NASDAQ:ORCL) or Intel (NASDAQ:INTC) and all the times you could have traded in and out for huge swing profits. But believe me, it didn't go down like that.)

The only reason David Gardner's original Rule Breaker portfolio survived the crash (in fact, it returned 20%-plus annualized for 10 years -- including the bear market) is that when he caught lightning in a bottle, he stuck with it.

Do you have the guts to make money?
Be honest. Because that's what it takes to crush the market: guts. And "guts" is 95% emotion -- at least. Fancy spreadsheets and black-box models didn't keep folks invested in IBM (NYSE:IBM) when it looked broken in 1994 -- or Altria (NYSE:MO) when the Marlboro Man hit the skids in 2000.

Love hurts. Midway taught me that. I rode that sucker from $10 to near $20 to almost zero. But a funny thing happened along the way. I didn't bail at the top but instead got in the habit of buying more whenever it clunked to around $4.

So now, I've got a full Bell exhaust and four Panasport wheels riding on Midway. I think I have to sell a little (as soon as I'm cleared under the Fool's strict trading guidelines, that is). Baby needs a new set of wheels!

Talk about the passion
Even if you don't fall in love with your stocks, do fall in love with investing. I joke about the pocket-protector set around Fool HQ, but they have taught me that great investors do it out of love. Just like great wrench-turners and great dancers.

This is why The Motley Fool works. You'll find those Rule Breakers types online chatting endlessly about their stocks. Believe me when I tell you it makes them better investors. (I think they may even be falling in love.)

Looking to crush the market?
If you like extreme growth investing and think there is a grain of truth in what you've read today, you should check out David Gardner's Motley Fool Rule Breakers newsletter service. Already, a number of picks are moving in on doubles, and these folks love their stocks.

You can even try the service for 30 days for free. No risk, no obligation. You can verify what I've said and find out for yourself if this type of high-stakes-and-high-reward investing is the thing for you. If not, it's always better to have loved and lost (though when it's free, you can't lose). Click here to learn more about David's free trial offer.

This article was originally published on Aug. 11, 2005. It has been updated.

All picks and results are posted on the Rule Breakers website. Paul Elliott owns shares of Midway but of no other companies mentioned. Time Warner (parent company of AOL), Schwab, Biogen Idec, and Best Buy are Motley Fool Stock Advisor recommendations. The Motley Fool isinvestors writing for investors.