《Livermore Memoirs》：

All you need to do is observe market trends, identify resistance levels, and once identified, be ready to trade along the line of least resistance at all times.

This may sound easy, but in practice, one must guard against many things, and most of them are about fighting oneself and the weaknesses of human nature.

That is why I say that correct traders have two forces helping them: one is the fundamental market situation; the other is those who make mistakes.

In a bull market, people tend to ignore bearish factors, which is human nature, and they are often surprised by it.