Changing your mind looks awkward when the old opinion is still sitting in your journal. That is also what makes a journal useful. It gives you a chance to compare what you believed with what actually happened, instead of quietly rewriting the story.

The challenge is deciding whether new information changes the case or merely makes holding the view uncomfortable. Switching direction whenever a candle changes color is not flexibility. Refusing to reconsider a broken assumption is not discipline. Both habits can hide behind respectable language.

Name the claim you are updating

Separate three things: a long-term view about a business, a short-term trading setup, and the position currently in your account. They can have different time horizons. A company can remain interesting while a particular entry no longer fits your criteria.

Write the original claim in a sentence that could be challenged. Then name the new evidence. “I feel less confident” describes your reaction. “The company withdrew the guidance my analysis relied on” identifies a change in the information set. Neither sentence automatically dictates a trade, but the second gives you something concrete to investigate.

Keep the old version visible

Imagine a hypothetical research note built around improving margins. A later filing shows that the improvement came largely from a temporary item. A useful revision preserves the earlier note, identifies the temporary item, and explains which part of the valuation case now needs work.

An unhelpful revision simply changes the target and declares the thesis intact. That protects the author’s pride while making the record less useful. The same problem appears when a short-term trade is relabeled a long-term investment without a fresh assessment of exposure and objectives.

Use a revision rule

Create a small log with four entries: original assumption, new evidence and its source, what the evidence changes, and the action or further research it requires. Add the time and date. If an immediate response is required by an existing risk plan, follow that plan rather than postponing it for an elaborate essay.

Not every update requires a new order. Some justify reducing confidence, seeking another source, or leaving a candidate on a watchlist. Financial decisions also need to fit your circumstances; being intellectually persuaded does not make an investment suitable.

Judge the update fairly

A revised view can still turn out badly. Review whether the change followed information available at the time, rather than whether the next price move applauded it. Equally, do not use a good process as a permanent defense of a method that produces weak results after costs.

For a practical exercise, revisit one old research note. Add a clearly labeled update without deleting a word of the original. Ask what would change your current view. If the answer is “nothing,” the problem may be the rule for evaluating evidence rather than the market.

For the broader decision framework, see Build Your Trading Plan. This article develops the evidence-and-revision theme in Tim Justice’s writing on being willing to change a view.

For structured education, explore Tackle Trading’s upcoming webinars and 15-day PRO trial. Trading Justice LLC and Tackle Trading LLC are separate businesses under common ownership.

General education, not individualized investment advice. Investing and trading involve risk. Options and leveraged products can involve substantial losses and obligations.