One of the more contra-intuitive propositions that I regularly put forth in the SMI newsletter is the idea that one's investing decisions can usually be made with little regard for what's currently going on in the investment markets. Let me make my case, and then we'll apply it to the question of deciding whether now is a good time to sell some or all of your stock holdings.

Typically, where do ideas for your investment decisions originate? For many investors, the starting point of the process is found in the impersonal "outside" world of current events, magazine articles, and brokers' recommendations. Their decisions are primarily guided by outside considerations. As they respond to all the data thrown at them—sometimes buying, sometimes selling—their personal "inside" financial worlds take shape. Their thinking is "outside-in." They need a continual stream of news and information to provide stimulation and provoke them to action. Decision-making would be impossible without it.

For other investors, the starting point of their decision-making is "inside" information. The focus is on their own financial needs and a personalized long-term strategy designed to meet those needs. Their buy/sell decisions are made based on what's required to make sure their financial holdings are in accord with the game plan. The "outside" world of investment professionals comes into the picture only because assistance is needed in executing decisions already made. This is "inside-out" thinking, where decisions are primarily shaped by inside considerations. Thus, current market fads, trends and so-called expert opinions are largely irrelevant to inside-out investors. As you have probably guessed by now, I'm encouraging you to be an inside-out thinker.

In other words, make your investing decisions like you do other consumer purchasing decisions. For example, if your family has grown to the point you need a spacious minivan to haul everyone around, you wouldn't buy a new Volkswagen Beetle instead merely because an article in Money magazine said they're exceptionally "hot" at the moment. Or, if you need a medicine that lowers your blood pressure, you wouldn't let a glowing recommendation from your druggist convince you to bring home the leading antihistamine for allergies instead. It would be foolish to let irrelevant external influences (outside-in thinking) steer you into making such inappropriate purchases. Instead, you make your decisions based on your needs at the time, irrespective of what the marketplace would like to sell you.

This is obvious, you say. Yet, many people have a difficult time applying this consumer mindset to their investing decisions. One of the most frequently asked questions recently is a variant of "The market seems shaky and I've read where many experts are sounding an alarm. Should I sell my stocks?" These folks may decide whether to reduce their stock holdings depending on how volatile the market has been, what the business magazines say, what the Federal Reserve may do to interest rates, or—heaven help them—what my opinion might be. Outside-in thinking will never tell you whether it's a "good time" to sell stocks because no one knows what the market will do in coming months (as evidenced by the continual reporting of conflicting opinions from Wall Street's bulls and bears).