As we all know, the danger points in trading come when we’re under stress. The immediate source of stress is usually adverse price movement, and the danger is that we capitulate to internal promptings which are irrational.
It would doubtless be a worthy objective to work to vanquish stress- as much in our lives as in our trading. But in trading the more practical solution (in life too perhaps) is to take on a series of rules for action in all circumstances. This is not complicated: the only things we do in trading are to initiate positions and then close them. It’s a relatively simple matter to formulate rules for each proposition. For example, we only open positions when all the pieces fit and we only close them when the pieces cease to fit or when our stop is hit, whichever is first. OK, adhering to the rules is not as easy as formulating them. But we can get there, step by step, if we are committed to winning.
- John Percival, The Way of the Dollar