A decision journal records what you knew, what you expected and why you chose an option before you know the outcome. Later, it helps you compare your original reasoning with what happened, instead of reconstructing a tidier story from memory.
Use it for choices with meaningful trade-offs: taking a course, changing a routine, accepting a project or deciding how to spend limited time. You do not need an entry for every everyday choice. For medical, legal or major financial decisions, a journal can organise questions, but it cannot replace qualified advice.
What goes into a decision journal?
A useful entry contains the decision, a deadline, realistic alternatives, the information currently available, important uncertainties and a review date. It should be short enough to use while the choice is still open.
The purpose is learning, not perfect prediction. A good outcome can follow weak reasoning, and an unwelcome outcome can follow a reasonable choice. Research on outcome bias in decision evaluation by Baron and Hershey examined how knowing results changes judgments about decisions. A dated record gives you a way to inspect your reasoning separately from the result; the study does not establish this particular worksheet as a proven decision aid.
Copyable decision journal template
Date and decision:
What must I choose, and by when?
Options, including delaying or doing nothing:
What matters most in this choice?
Facts I currently know:
Assumptions I am making:
Information I still need:
Likely benefits and costs of each option:
What would change my mind?
My choice and the main reason:
What I expect to happen:
One safeguard or next step:
Review date:
Write “unknown” when you do not know. If you include a probability, explain its basis; a precise-looking number is not automatically an informed estimate. For an ordinary personal decision, “likely, uncertain or unlikely, because…” may be more honest than guessing a percentage.
Step 1: define the choice narrowly
“What should I do with my life?” is too broad for one entry. “Should I enrol in this six-week evening course this month?” has identifiable options, costs and a deadline.
If you feel stuck, begin by writing the next choice you actually have authority to make. Our journal prompts for feeling stuck can help separate a vague problem from a next step.
Step 2: list genuine alternatives
Include at least one alternative to the choice you already favour. Sometimes that is a smaller trial, a different provider, waiting until a busy period ends or declining. Include “do nothing for now” when it is a real option, along with the consequences of waiting.
A choice is not a fair comparison if one option gets a detailed description and the others get dismissive labels. Compare the same dimensions across options: time, cost, accessibility, usefulness and reversibility, for example.
Step 3: separate facts from assumptions
Facts are things you can check now: course dates, a published syllabus, your existing commitments. Assumptions are expectations: you will enjoy the class, have enough energy after work or use the skill next year.
For each important assumption, ask whether one low-cost check would reduce uncertainty. Read a sample lesson, ask about the workload or try an introductory exercise. You may still choose with uncertainty; the point is to know where it remains.
Worked example: choosing an evening course
The following is a fictional example of an ordinary learning decision.
On a small screen, scroll the table sideways to see every column.
| Entry field | Example |
|---|---|
| Decision | Enrol in a weekly drawing course before registration closes on Friday. |
| Options | Take the course; use free exercises for a month; wait for the next term. |
| Priority | Regular guided practice without overloading two busy work evenings. |
| Known | Classes are on Wednesdays. Travel takes 30 minutes each way. The fee fits the planned hobby budget. |
| Assumption | I will have enough energy for a class after work. |
| Check | Ask about homework and try a Wednesday practice session before enrolling. |
| Choice | Wait one term and test a smaller weekly practice first. |
| Expected result | I expect to learn whether Wednesday evenings are a workable time. |
| Review | After four Wednesdays, review attendance, energy and whether I want more guidance. |
This record makes the decision reviewable. It does not claim waiting is the best choice for everyone. Another reader with different time and support could reasonably enrol.
Step 4: write what would change your mind
A useful entry names a condition that matters enough to reconsider. “I will pause if the workload requires more evenings than I can spare” is clearer than “I will see how it goes.” It prevents a plan from becoming a rule you follow regardless of new information.
If the uncertainty itself feels uncomfortable, use our guide to thinking through uncertainty. You can acknowledge discomfort without treating it as proof that a choice is wrong.
Step 5: review the process and outcome separately
At the review date, write two short assessments:
- Process: Did I compare realistic options, check important facts and account for my constraints?
- Outcome: What happened, what differed from my expectation and what information is new?
Then choose one lesson with a specific use. “Ask about travel time before committing to an evening activity” is transferable. “Never try courses” is a sweeping conclusion from one experience.
If an option went poorly, our mistake review guide offers questions for identifying a change without turning the event into a verdict on yourself.
Keep the journal proportionate
What if I keep adding more research?
Set an information deadline and identify the few unknowns that could actually change your choice. More information can help, but an entry should not become a new way to delay a decision indefinitely.
Should I record feelings?
Yes, if useful. Note “I feel excited” or “I feel pressured,” then keep that distinct from evidence about the option. Feelings can reveal preferences and needs without settling every factual question.
How many decisions should I review?
Start with one meaningful, ordinary choice. A journal full of unreviewed entries gives you less opportunity to learn than a small set you revisit.
For a recurring review appointment, use the weekly journal review template to keep the check brief.
Start with the next real choice
Write the date, two alternatives and the main uncertainty. Add a review date before closing the page. A decision journal earns its place when it helps you make a considered choice and learn something usable afterward.
Research reference: Baron and Hershey (1988), Outcome Bias in Decision Evaluation. The template and course example are original editorial applications, not results reported by that study.