Editor's note: As a special bonus to TheStreet.com readers, we will be running an updated version of Jim Cramer's "Twenty-Five Rules of Investing," from his latest book, Real Money: Sane Investing in an Insane World. Here's Rule 17.

When I hear the word "hope," as in, "I

hope

that doomed stock du jour will come back to where I bought it so I can sell it," I get furious. Always remember:

Hope is not part of the equation.

Don't "hope" for anything. Hope is emotion, pure and simple. And this is not a game of emotion, other than to take the other side of the desperate. Yet, I hear "hope" more than any other word, particularly with troubled tech stocks. Those stocks are filled with hopeful people betting that something good eventually will happen that will drive the stocks higher.

Hoping and praying are excellent things in religion. They are integral to sports. You know that the coaches of some of these come-from-behind NCAA men's basketball teams keep players motivated through hope.

But hope is a mistaken emotion in our business. It supplants reason, it supplants rigor -- especially when it comes to low-dollar-amount stocks.

No company ever set out to have a low-dollar-amount stock. The companies fight like heck not to have them. When they have them, it is a judgment rendered by the market that is harsh, difficult to accept and ultimately, far more right than wrong. When you suffuse your thinking with hope, you end up holding on for something that most likely will never occur. Cut your losses and move on.

Remember, we don't care where a stock has been, we care where it is going, and it is most likely headed down if you are hoping.

At the time of publication, Cramer held no positions in stocks mentioned. Jim Cramer is a director and co-founder of TheStreet.com. He contributes daily market commentary for TheStreet.com's sites and serves as an adviser to the company's CEO. Outside contributing columnists for TheStreet.com and RealMoney.com, including Cramer, may, from time to time, write about stocks in which they have a position. In such cases, appropriate disclosure is made. To see his personal portfolio and find out what trades Cramer will make before he makes them, sign up for

Action Alerts PLUS. Listen to Cramer's RealMoney Radio show on your computer; just click

here. Watch Cramer on "Mad Money" at 6 p.m. ET weeknights on CNBC. Click

here to order Cramer's latest book, "Real Money: Sane Investing in an Insane World," click

here to get his second book, "You Got Screwed!" and click

here to order Cramer's autobiography, "Confessions of a Street Addict." While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column by

clicking here.

TheStreet.com has a revenue-sharing relationship with Traders' Library under which it receives a portion of the revenue from Traders' Library purchases by customers directed there from TheStreet.com.