Sticking to your trading plan: the binary rules method

Your trading plan is good. You wrote it calmly, you backtested it, you know it holds up. And yet, one session in three, you don't follow it.

This isn't a knowledge problem. It's a plan design problem: most trading plans are written in a form that makes them impossible to follow, and above all impossible to verify.

A plan you can't verify isn't a plan. It's an intention.

Why your trading plan doesn't get followed

Open yours and look at it honestly. You'll probably find lines like these:

• "I only trade A+ setups"
• "I stay patient and don't anticipate"
• "I manage my risk properly"
• "I don't trade when it doesn't feel right"

These lines share one fatal flaw: they can't be verified. At the end of the session, you can't say whether you followed them or not, because they have no truth value. Was that setup A+? Depends who's judging, and above all when: a losing setup retroactively becomes a B, a winning setup becomes an A+.

An unverifiable rule produces three effects, all of them bad:

It can't be formally broken. So you never break it "officially". So you never see the problem.

It justifies itself after the fact. The brain is excellent at reconstructing a read of the market that legitimises the trade you've already taken.

It produces no data. You can't count the breaches, and you can't price them. You stay in the realm of impressions, and impressions don't change behaviour.

A rule you can't tick or untick at the end of the session isn't a rule.

Rewriting your rules as binary conditions

The work is to turn every intention into a condition that can be ticked. The quality test is simple: an outside observer, watching a recording of your session, must be able to say yes or no without asking your opinion.

Look at the difference: the right-hand column can be ticked or unticked without argument, the same evening, in ten seconds.

Five rules, not fifteen

A thirty-line plan doesn't get followed, it gets consulted. And a plan that gets consulted is a dead plan.

Keep three to five rules, the ones covering the behaviours that actually cost you money. Not the ones that look professional. If you don't know which to keep, take the five in the table above: they cover most of the damage in day trading.

The rest don't disappear: they live in your playbook, which describes *how* you trade. The plan describes *what you forbid yourself*. Two different documents, and they need to stay separate.

The pre-session checklist: decide before, not during

A rule written in a document you open once a month carries no weight at 9:30. It has to be in front of your eyes before the open.

A five-point checklist, run through in two minutes, every day:

1. My rules for the day, re-read.
2. My maximum risk for the day, in R, written down.
3. The macro events for the session, flagged.
4. My mood, scored out of 5.
5. My stop condition, said out loud.

The content matters less than the repetition. The checklist teaches you nothing new: it gets you into the session having already decided. That's the whole difference between applying a decision and making one under pressure.

What makes a rule genuinely hold

Three properties separate a rule that holds from a rule that slips.

It requires no judgement at the critical moment. "I don't trade when I'm angry" asks you to assess your own state at the exact moment your assessment is impaired. "After a stop, ten minutes without a position" only needs a timer. The second holds, the first doesn't.

It has a physical counterpart. Closing the platform, starting a timer, standing up. A rule that exists only in your head is in permanent competition with the urge of the moment. A rule that triggers an action wins.

It has a known price. An abstract rule carries no weight. A rule you know has cost you 1.8R on average across the eleven times you broke it this year carries an enormous amount. You only get that number by ticking your rules session after session and cross-referencing with your results — that's the job of the journal, and it's the only way to make a rule something other than a good intention.

Measure your discipline, not just your results

Here's the point most traders miss: discipline is measured independently of the result.

A session where you followed every rule and lost 1R is a good session. A session where you broke three rules and made 2R is a bad session — in fact it's the most dangerous of all, because the market has just rewarded the behaviour that will eventually ruin you.

If you only log P&L, those two sessions get ranked the wrong way round. You learn the exact opposite of what you should.

So log, every session, separately from the result:

• The number of rules kept out of the total
• Your execution discipline, out of 10
• Your adherence to the plan, out of 10
• Your emotional control, out of 10

Then, every month, run the only calculation that matters: the average result of your "all rules kept" sessions against your "at least one rule broken" sessions.

The gap is your cost of indiscipline. It's a figure in pounds or in R, and it's almost always bigger than the trader imagined. Many discover at that point that they don't need a better strategy: they need to execute the one they already have.

That's the cross-reference Edgio runs automatically — rules ticked, behavioural scores and results put side by side — but what matters is that it exists, not the tool that calculates it. A well-kept spreadsheet does the same job, provided you actually reopen it every month.

The protocol when a rule breaks

You will break a rule. That's not a hypothesis. What matters is what happens in the five minutes that follow, because that's where the day tips.

A short protocol, decided in the cold:

1. I name the breach, out loud. "I took a fourth trade." Naming it breaks you out of autopilot.
2. I close the position if there's still time. No negotiating with a trade that shouldn't have existed.
3. I mark the session as broken in my journal, immediately. The data matters more than the ego.
4. I stop the session. One broken rule is almost always followed by a second. The cost of stopping is one missed trade; the cost of carrying on is a whole day.

Five minutes. Written in advance. That's what stops a breach from becoming a disaster.

In short

Sticking to your trading plan isn't a question of character. It's a question of format:

• Binary rules, verifiable by a third party, never intentions.
• Three to five, not thirty.
• Re-read before the session, via a short daily checklist.
• Ticked every evening, separately from the result.
• Priced every month: what each rule costs when it breaks.

A plan written in that format almost follows itself. A plan written in good intentions never gets followed, however strong your willpower — and it isn't your willpower that needs changing, it's the plan.