Partial Fills Change Your Risk Math
A partial fill is a new position with a new plan. If you treat it like a “broken” order, you’ll improvise your way into oversized risk.
Process
Checklists, time stops, repeatability, and decision hygiene.
Backtests Underestimate Slippage Twice
Backtests pay the spread once and assume clean fills. Live trading pays it twice, plus a tax you didn’t model.
Stop Management Is Thesis Management
When you move a stop, you are redefining invalidation; if nothing changed in the thesis, moving the stop is just permission to be wrong longer.
Your P&L Attribution Is Usually Wrong
If you don’t separate edge from execution, sizing, and rule breaks, you will ‘fix’ the wrong thing and make the system worse.
A Strategy Without a Kill Switch Is a Time Bomb
Every strategy eventually enters a regime where it doesn’t work; without a kill switch, you’ll keep trading it until damage forces you to stop.
If You Don’t Define ‘No Trade’, You Will Trade Noise
A trading plan without explicit ‘no trade’ rules becomes an engine that converts boredom into risk.
Overtrading Can Be Built Into the Strategy
If your rules generate too many ‘valid’ signals, you will overtrade by design; discipline won’t fix a strategy that fires on noise.
Stop-outs Are Feedback, Not Failure
A stop-out is information about volatility, invalidation quality, and regime, and ignoring that information is how you repeat the loss.
The First Loss Is Usually the Cheapest Loss
When invalidation arrives, the first exit is usually the cheapest exit you’ll ever be offered.
Broker Disputes Are Evidence Games
When something goes wrong, the winner is the one with logs, ticket IDs, and policy wording, not the one who is angry.
Pre-commitment Beats Willpower
If your risk controls require willpower in real time, you don’t have risk controls.
Perfect Entries Hide Weak Exits
Entry obsession is often compensation for having no real exit, sizing, or holding plan.
A Journal Without Taxonomy Is a Diary
If you don’t classify setups and mistakes, your journal becomes narrative therapy, not performance improvement.
Timeframe Mismatch Is the Silent Killer
If your thesis is long-horizon but your stop and expectations are short-horizon, you’re not managing risk, you’re manufacturing churn.
Opportunity Cost Is Real P&L
Holding mediocre positions is a hidden loss: it ties up your capital and your attention.
Discretion Is Hidden Leverage
Every ‘just this once’ rule override is extra risk you never measured, and it clusters on the worst days.
You Cannot Outsource Judgement
Analysts, headlines, and social feeds don’t carry your downside, so their conviction is not your risk plan.
Thesis Drift Kills Accounts
A trade that changes identity mid-flight is usually a loss you’re refusing to label.
Most Blowups Are Operational
Most accounts blow up from operational failures: order mistakes, leverage settings, platform issues, and gaps, not from ‘bad analysis’.
A Good Outcome Can Be a Bad Decision
If you learn from outcomes instead of process, randomness trains you into bad habits.
Complexity Is Usually an Alibi
Complexity often exists to protect ego: it becomes impossible to admit the strategy is wrong.
Time Is a Stop-loss Nobody Uses
A trade can be ‘not wrong’ and still be a mistake because it wastes time, capital, and attention.