Quick answer: a journal only works if it ends in a decision. Log twelve fields per trade, calculate seven metrics each week and spend twenty minutes on a fixed review. If you could track only one thing, track this: did you follow your plan, yes or no. That single column explains more results than any indicator.
Key takeaways
- A journal without metrics is a memory; with metrics it is an improvement system.
- Measuring in R rather than dollars lets you compare weeks of different size.
- Most traders discover they lose money in a few repeated, very identifiable situations.
- Review weekly, not daily. Day to day is noise.
The 12 fields for every trade
| Field | Why it matters |
|---|---|
| Date and time | Shows which hours make and lose money |
| Instrument | There is almost always one that drains you |
| Direction | Many traders perform worse short than long |
| Entry, stop and target | Defines the real risk of the trade |
| Size | Exposes size increases after a loss |
| Result in R | Makes weeks comparable |
| Reason for entry | Separates setup from impulse |
| Reason for exit | Flags exits driven by fear |
| Plan followed? | The most important column in the journal |
| Emotional state | Three words are enough |
| Chart screenshot | Visual memory of the context |
| One-line note | What you would do differently |
All twelve fields, plus a printable trade log and weekly metrics sheet, are in our free ebook The Trading Journal Blueprint.
The seven weekly metrics
- Number of trades. If it rises for no reason, you are overtrading.
- Win rate. Only useful beside the next one.
- Average winner and loser in R. If the average loser exceeds 1R, you are moving stops.
- Expectancy. (Win% × avg win) − (Loss% × avg loss). Your single most important number.
- Plan compliance. Percentage of trades executed exactly as defined.
- Weekly drawdown. Largest fall from the equity peak.
- Average risk per trade. It should be flat; if it climbs, something emotional is happening.
A real-world reading: 18 trades, 50% win rate, average winner 1.4R, average loser 1.0R, expectancy +0.20R, compliance 72%. The system works; the problem is that 28% of trades taken outside the plan.
The 20-minute weekly review
- 5 min: complete any trades you have not logged.
- 5 min: calculate the seven metrics.
- 5 min: review your worst trade without justifying it, and write one sentence about what went wrong.
- 5 min: choose one process fix for next week. Only one.
Four mistakes that make a journal useless
- Logging only the winners.
- Recording in dollars, which makes weeks impossible to compare.
- Writing long paragraphs nobody re-reads.
- Changing three things at once and never knowing which one worked.
From data to improvement
When the signal already arrives with entry, stop and target defined, the journal stops being a memory exercise and measures one thing only: your execution. The Cortex Signal Kit includes a trading journal and usage guide alongside the implementation manual, and for the emotional side the free ebook The Difference Between a Professional Trader and an Impulsive Trader covers cutting the impulse before it reaches the order ticket.
Frequently asked questions
Paper or digital?
Whichever you will actually fill in. Paper helps you think; a spreadsheet calculates the metrics for you.
How often should I review it?
Log daily, analyse weekly, and run a bigger review every month or every 100 trades.
What if my expectancy is negative?
Before changing strategy, check plan compliance. Below 90%, the problem is execution, not the system.
Is my broker history enough?
Only halfway: it has prices and results but not the reason for entry or whether you followed the plan, which is what improves performance.
How many trades before conclusions?
30 to 50 for a trend, 100 before trusting the metrics.
Measure what you repeat. Download the free ebook The Trading Journal Blueprint — 15 pages with the seven metrics, a worked month of data and printable templates. The Cortex Signal Kit includes a trading journal and daily Zoom sessions to review the process, not just the result.
Disclaimer: educational content. Cortex Next is not a financial service and guarantees no results. Trading involves risk of loss.
