If investors want to beat the market, Cramer says they need to know a handful of extremely important rules before they can be successful. They 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, money will be made. It’s the security blanket investors 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 honestly, it’s just not true that a stock will necessarily recover its losses.