What Investing Is Not
Investing is not gambling. Gambling is putting money at risk by betting on an uncertain outcome with the hope that you might win money. Part of the confusion between investing and gambling, however, may come from the way some people use investment vehicles. For example, it could be argued that buying a stock based on a "hot tip" you heard at the water cooler is essentially the same as placing a bet at a casino.
True investing doesn't happen without some action on your part. A "real" investor does not simply throw his or her money at any random investment; he or she performs thorough analysis and commits capital only when there is a reasonable expectation of profit. Yes, there still is risk, and there are no guarantees, but investing is more than simply hoping Lady Luck is on your side.