It is an old saying that most people have gullibly listened to or seen and they think that is all that is entailed when it comes to trading a market. However, what most people do not understand is that, it is one thing to buy low and sell high and it is another thing to know when you should be properly buying low and when you should possibly be selling at all.

As long as you cannot familiarize yourself with those things as an investor or a trader, it would be hard not to end up picking a falling knife when buying low sometimes, and then it would be hard to not get greedy and not even know when you should be selling.