Just remember, without discipline, a clear strategy, and a concise plan, the speculator will fall into all the emotional pitfalls of the market - jump from one stock to another, hold a losing position too long, and cut out of a winner too soon, for no reason other than fear of losing profit. Greed, Fear, Impatience, Ignorance, and Hope will all fight for mental dominance over the speculator. Then, after a few failures and catastrophes the speculator may become demoralised, depressed, despondent, and abandon the market and the chance to make a fortune from what the market has to offer.
The price pattern reminds you that every movement of importance is but a repetition of similar price movements, that just as soon as you can familiarize yourself with the actions of the past, you will be able to anticipate and act correctly and profitably upon forthcoming movements.
He really meant to tell them that the big money was not in the individual fluctuations but in the main movements that is, not in reading the tape but in sizing up the entire market and its trend.
In a narrow market, when prices are not getting anywhere to speak of but move within a narrow range, there is no sense in trying to anticipate what the next big movement is going to be. The thing to do is to watch the market, read the tape to determine the limits of the get nowhere prices, and make up your mind that you will not take an interest until the prices breaks through the limit in either direction.
If a man is both wise and lucky, he will not make the same mistake twice. But he will make any one of ten thousand brothers or cousins of the original.