One of the number one rules of investing is that you never ever want to try to time the market. The buy low sell high strategy forces you to do just that.
The buy low sell high strategy does not take anyone’s investment timeframe into account. Should you sell stocks in your retirement account when you are thirty years old because the market is high? Probably not.
Sometimes there’s a reason why certain companies are low. If you had used this advice to buy Circuit City right before they went under, you’d have lost your entire investment. Not all individual stocks that go low will go back up