The most expensive setup is the one you slept through.
You wake up and the market has already done the whole move overnight. Clean entry. Clean exit. Clean PnL. You were asleep. The chart didn't care.
Sometimes it's worse. The entry was right, the exit was emotional. You closed too early. Moved the stop. Re-entered after getting tagged out because "now it has to go." Human error is expensive in trading. I learned that the usual way — by paying for it.
Manual trading can make money. It just doesn't scale. Fatigue builds up. Focus slips. Night setups pass without you. A few hours in front of the screen and you start seeing signals that aren't there.
At some point I sat down and ran the numbers. Not what the market took from me. What I lost to my own weaknesses.
Missed entries. Boredom trades. Early profit-taking. Tilt. Bad execution.
The total was large enough to end the debate.
So I made a simple decision.
If the trader is the main source of drawdown, the trader needs less control.
Keep the logic. Keep the risk management. Keep the entry and exit rules.
Build a system that trades by my rules, without my weaknesses.
That's what I've been doing.
It took months.
The result... tomorrow.