So when you clicked that mouse and entered a long position you PREDICTED the price was about to go up did you not? And when you entered a short position you PREDICTED the price was going to go down.
The setup has to trigger to get into the trade. If it did not trigger and the price action did not show you that the stock price was moving higher, why would you trade it? So, that is more reactive trading as opposed to predictive trading. Some traders will try to predict for instance based on poor earnings and sell a stock, figuring it will go down. What happens when the stock instead, goes higher? So price action, candlesticks, setups that trigger, all tell you to get into that stock. I "did not" predict the stock would go higher. A confluence of factors was telling me that the stock is going up. That is the reason to go long. My opinion of the stock does not matter, if the factors tell me otherwise. That is what gets me into a trade, not because I thought a stock would go up or down. What I think about a stock does not matter. However, how the stock price moves and in what direction is what matters. It has to move before I take action.