Most traders either keep no journal or keep a bloated one they abandon in a week. The goal is a lean record that answers three questions later: what did I do, why did I do it, and did it work? Every field below earns its place by helping answer one of those.
The core fields (never skip these)
- Date and time - so you can group results by session and day of week.
- Instrument - the pair or asset traded.
- Direction - long or short.
- Entry price - where you actually got filled.
- Stop loss - the price that invalidates the idea.
- Take profit / exit price - your target and where you actually closed.
- Position size - lot size or units.
- Risk - the percent of account or dollar amount risked on the trade.
- Result in R - the outcome expressed in multiples of what you risked.
These nine fields are enough to calculate win rate, risk-to-reward, and expectancy - the numbers that tell you whether your trading actually has an edge.
The diagnostic fields (where the real value is)
The core fields tell you the outcome. The next set tells you the cause, which is what lets you improve.
- Setup tag - a short label for the type of setup, such as "breakout retest" or "London reversal". This is the single most valuable field.
- Session - Asia, London, or New York. Many strategies only have an edge in one window.
- Entry reason - one sentence on why you took it. If you cannot write one, that is a finding.
- Exit reason - hit target, hit stop, closed early, moved stop. Exits leak more money than entries.
- Chart screenshot - the setup at the moment of entry, so review is visual, not from memory.
- Rule adherence - a simple yes/no: did you follow your plan? This separates strategy problems from discipline problems.
Grouping by setup tag reveals that London reversals pay and impulsive news trades do not - a pattern invisible in a single profit-and-loss total.
Why the setup tag matters most
Raw profit and loss hides everything. Tag each trade by setup type and suddenly you can filter: this setup wins 60% of the time at +1.8R, that one wins 40% at +0.3R and should probably be cut. Without tags, a good setup and a bad setup blur into one mediocre average. With tags, you can amplify what works and delete what does not. Turning those observations into rules is the whole point of keeping the journal in the first place.
Important: record the rule-adherence field honestly. A losing trade where you followed the plan is a strategy question. A losing trade where you broke the plan is a discipline question. They have completely different fixes, and only an honest journal can tell them apart.
Fields you can usually skip
Do not drown the journal in data you will never review. Broker order IDs, minute-by-minute price paths, and long emotional essays tend to make journaling feel like a chore and get abandoned. If a field never changes a future decision, cut it. A journal you actually fill in beats a perfect one you quit.
Journaling backtests as well as live trades
The same fields apply when you journal a backtest. In fact, backtesting is where you build the habit cheaply. When you replay charts in a simulator, each trade is logged with entry, stop, target, R result, and a setup tag automatically, so you can filter a few hundred trades by setup and session and see your edge emerge before any real money is at risk. That trained eye then carries straight into your live journal.
From fields to decisions
A journal earns its keep when it changes behavior. After a month of honest records you should be able to name your best setup, your worst session, your most common rule break, and the one exit habit costing you the most. Those four answers are worth more than any indicator.
Trading journal FAQ
What should I record in a trading journal?
At minimum: date and time, instrument, direction, entry, stop, target, position size, risk, exit, R result, setup tag, session, and a one-line reason for entry and exit. A chart screenshot at entry ties it all together.
What is the most important field in a trading journal?
The setup tag paired with the R result. Grouping trades by setup reveals which ones make money and which quietly drain the account - something total profit and loss hides.
How often should I review my trading journal?
Log each trade immediately, review weekly to catch behavioral leaks, and review monthly to see which setups and sessions carry your edge over a larger sample.