Why Watching P&L Ruins Your Trading
45sIt reveals a common trading mistake with a neuroscience twist, making it highly relatable and educational for traders.
▶ Play ClipAI Summary
A trader explains a simple but powerful lesson: watching the P&L tick in real time hijacks your rational brain and leads to poor decisions. By covering the P&L with a sticky note for 30 days, he achieved a 40% increase in average winner size.
Chapters
[00:01]
The Problem: Obsessive P&L Watching
Watching P&L every tick (green/red) causes emotional reactions that lead to bad trading decisions.
[00:15]
The Brain's Response to Losses
Seeing red on screen makes your prefrontal cortex (rational decision-making) go offline, causing you to trade pain rather than the chart.
[00:28]
The Green Screen Trap
Profits are equally dangerous: your brain wants to lock them in, leading to cutting winners short out of fear of losing the gain.
[00:41]
The Sticky Note Solution
Placed a sticky note over the P&L for 30 days. Result: win rate stayed the same, but average winner grew by 40%.
[00:53]
Part of a Larger Series
This is one of seven common trading mistakes covered in a new video (link in description); the other six are supposedly even more surprising.
Mentioned in this Video
Study Flashcards (4)
What happens to your brain when you see a red (loss) on the P&L?
easy
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What happens to your brain when you see a red (loss) on the P&L?
easy
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When you see red on the screen, your prefrontal cortex (the rational decision-making part) goes offline, causing you to trade based on pain rather than the chart.
00:15
What is 'cutting your winner short' and why does it happen?
medium
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What is 'cutting your winner short' and why does it happen?
medium
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Cutting winners short because of P&L fear, not because the trade signals it.
00:28
What experiment did the trader do to ignore the P&L?
easy
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What experiment did the trader do to ignore the P&L?
easy
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He placed a sticky note over his P&L for 30 days.
00:41
What was the result of the sticky note experiment?
medium
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What was the result of the sticky note experiment?
medium
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His average winner got 40% bigger while his win rate stayed the same.
00:41
💡 Key Takeaways
💡
Red on the screen disables rational thinking
Provides a clear, science-based reason for poor trading decisions under loss.
00:15
🔧
Sticky note experiment
Simple, actionable tip that produced a measurable improvement in trading results.
00:41Full Transcript
[00:01] second monitor, all day, every single tick. Green, red, green, red. And I can trace almost every bad decision I made back to the moment I glanced at that number. So, here's what happens to your brain when you see red on the screen.
[00:15] Your prefrontal cortex, the part that makes rational decisions, goes offline. You stop trading the chart. You start trading the pain. And when it's green, it's actually equally dangerous. Your brain screams to protect that. Lock it
[00:28] Don't make a mistake. Don't let it come back. So, you cut your winner short. Not because the trade told you to, but because the P&L told you to. So, I did something that felt insane. I put a sticky note just over my P&L for
[00:41] 30 days. My win rate didn't change, but my average winner got 40% bigger. 40%. Same setups, same strategy, one sticky note.
[00:53] This is one of the seven mistakes I break down in our new video. The link's in the description. The other six might surprise you even more.
