Trading Journal
Build a feedback loop: hypothesis, execution, review, iteration.
Hoe angst, hebzucht en biases je handelsbeslissingen beïnvloeden.
Why Keep a Journal?
A trading journal is the single most effective tool for improvement. Without one, you're relying on memory - which is biased, selective, and unreliable. A journal creates an objective record that lets you identify patterns in your behavior, not just in the market.
Every professional trader, fund manager, and serious practitioner keeps some form of structured record. It's not optional - it's infrastructure.
What to Record
A good journal entry captures both the mechanics and the psychology of each trade:
| Category | What to write |
|---|---|
| Date & Time | When you entered and exited |
| Instrument | What you traded (BTC, AAPL, etc.) |
| Direction | Long or short |
| Thesis | Why you took the trade (the setup, the reasoning) |
| Entry & Exit | Exact prices, order types used |
| Stop-loss | Where your stop was and why |
| Position size | How much you risked |
| Result | P&L in dollars and R-multiples |
| Emotion | How you felt before, during, and after |
| Lesson | What you learned (even if the trade was profitable) |
Outcome vs. Decision Quality
This is one of the most important concepts in trading psychology:
- A good decision can have a bad outcome (you followed your plan perfectly but the market moved against you).
- A bad decision can have a good outcome (you broke your rules but got lucky).
Your journal should help you evaluate decision quality, not just results. Over time, good decisions compound into good results. Bad decisions eventually catch up with you, no matter how lucky you've been.
The Review Cycle
A journal is useless if you never read it. Build a review habit:
- Daily: Quick entry after each trade (2-3 minutes).
- Weekly: Review the week's trades. Look for patterns - are you making the same mistake repeatedly?
- Monthly: Aggregate stats. Win rate, average R, biggest mistakes, best setups.
The review is where the learning happens. The journal entry is just data collection.
Template: Journal Entry
Practice
Write a Journal Entry
Using the template above, write a journal entry for a simulated trade. It doesn't matter if the trade is real - the practice of structured recording is the skill you're building.
Key Takeaways
- A journal is infrastructure, not optional.
- Record mechanics (entry, exit, size) AND psychology (emotions, lessons).
- Evaluate decision quality, not just outcomes.
- Review weekly and monthly to find behavioral patterns.
- A bad outcome from a good process is still a good trade.
Wat is marktpsychologie?
Markten worden gedreven door mensen, en mensen worden gedreven door emoties. Marktpsychologie bestudeert hoe angst, hebzucht en kuddegedrag prijsbewegingen beïnvloeden.
Angst en hebzucht
- Hebzucht drijft markten omhoog voorbij fundamentele waarde — bubbels ontstaan.
- Angst drijft markten omlaag voorbij fundamentele waarde — paniekverkopen.
- De cyclus herhaalt zich: optimisme → euforie → angst → capitulatie → herstel.
Veelvoorkomende cognitieve biases
- Bevestigingsbias: Alleen informatie zoeken die je bestaande visie bevestigt.
- Verliesaversie: Verliezen voelen ~2x zo erg als winsten goed voelen.
- FOMO: Fear of missing out — kopen omdat anderen kopen.
- Ankereffect: Te veel vasthouden aan een eerste referentiepunt (bijv. je instapprijs).
Belangrijkste punten
- Emoties zijn de grootste vijand van consistente resultaten.
- Herken je eigen biases voordat je handelt.
- Een handelsplan voorkomt impulsieve beslissingen.
- De markt is een spiegel van collectieve psychologie.
Les afgerond
Je hebt afgerond: Trading Journal.