If you want to beat the market, Cramer says you need to know a handful of extremely important rules before you can be successful. You need to unlearn some of the worst, most harmful myths that all too many people seem to believe about stocks and investing. One of the biggest? Buy and hold.

Buy and hold isn’t a strategy, it’s an ideology. Its one central tenet is based on the idea that if you buy a stock and hang onto it for long enough, you’ll make money. It’s the security blanket you use when a stock drops: “I know the stock is down now, but buy and hold says it’ll eventually bounce back and go higher than where I bought it.” But it’s just not true that your stock will necessarily recover its losses.