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Decision and outcome are different things — and mixing them up stops you from learning
Published by The Retail Trader · AUG 09, 2026 · Trading Psychology
A trade you took according to all your rules hit its stop. A trade you took without thinking, on a large size, doubled. Which one was good? Most people answer by looking at the P&L, and that is where learning stops.
Place every decision on two axes — was the process right or not, and did the outcome turn out good or not:
• Good process, good outcome — this is the target. Repeat it.
• Good process, bad outcome — this is normal. It should not change the system.
• Bad process, bad outcome — the clearest lesson. It is easy to learn from.
• Bad process, good outcome — the most dangerous box. This is where habits form that turn expensive later.
The fourth box is dangerous because it gets rewarded. You removed the stop and the stock came back — now removing the stop next time has become easier.
The market hands out rewards to bad habits at random. So habits cannot be corrected by outcomes alone — they have to be corrected with rules and review.
The outcome of a single trade comes largely from randomness. The result of 20 trades is a little less random. Of 200, less still.
So a system is not judged on one trade. A trader who changes the method after every loss never manages to build real data on any method.
P&L should not be the first question. The first question should be: did I do what I had planned to do?
If yes, the trade was good — even if money was lost. If not, the trade was bad — even if money was made. This is a small reframe that makes the biggest difference over the long run.
In trading you cannot control outcomes. You can only control the process — which trade to take, on what size, and where to exit. Over the long run that process becomes the outcome, and before that, all the individual results that come are just noise.
This article is for educational purposes only — it is not a buy or sell recommendation, makes no claim of guaranteed returns, and is not advisory. Rules, rates and mechanics are changed from time to time by the exchanges, SEBI and RBI, so verify every number yourself with your broker or an official source.