Understanding WHY you make emotional trading decisions is the first step to overcoming them.
The answer lies in neuroscience — how your brain physically responds to winning, losing and the anticipation of both.
Dopamine is a neurotransmitter released when you experience pleasure or anticipate reward.
In trading:
When a trade moves in your favor — dopamine releases.
When you take a profit — dopamine releases.
When you anticipate a big win — dopamine releases.
The problem:
Dopamine drives you to repeat behaviors that caused its release — regardless of whether those behaviors are rational.
Taking profits too early — dopamine from booking a win.
Entering trades impulsively — dopamine from the excitement.
Overtrading after wins — seeking more dopamine hits.
The casino parallel:
Slot machines are designed around dopamine. Variable rewards — sometimes win, sometimes lose, unpredictable timing — create the strongest dopamine response.
Trading has the same structure. This is why trading can become addictive — and why some traders need to trade constantly even when losing.
Cortisol is released during stress and perceived threat.
In trading:
When a trade moves against you — cortisol releases.
When you approach your stop loss — cortisol spikes.
When you are in a losing streak — cortisol remains chronically elevated.
Effects of cortisol on trading decisions:
Impairs rational thinking.
Increases risk aversion — makes you close winning trades early from fear.
Increases impulsivity — fight or flight response.
Reduces patience — makes sitting in trades unbearable.
Chronic cortisol elevation from trading stress physically impairs your ability to make good decisions.
Nobel Prize winning research by Kahneman and Tversky proved:
Losses feel approximately 2x more painful than equivalent gains feel good.
Losing $100 is psychologically twice as painful as gaining $100 is pleasurable.
Trading implications:
You hold losing trades too long — avoiding the pain of realizing the loss.
You take profits too early — fear that gains will be taken away.
You avoid valid setups after a loss — fear of experiencing that pain again.
You move stop losses — to postpone the inevitable painful realization.
Loss aversion is the single biggest cause of poor trading decisions.
Once you own something — you value it more than you would if you did not own it.
In trading:
Once in a trade — you become emotionally attached to it.
You find reasons it will work. You ignore signals it is failing.
You hold longer than your rules dictate — because it is YOUR trade.
This is why rules must be set BEFORE entering trades — when you are objective.
After entering — rationality decreases and emotional attachment increases.
The brain gives disproportionate weight to recent events.
After winning trades:
“My strategy is perfect. I cannot lose.”
Leads to overconfidence. Larger position sizes. Rule breaking.
After losing trades:
“My strategy is broken. I should not trade.”
Leads to paralysis. Missing valid setups. Or quitting entirely.
Both reactions ignore the statistical reality that trading results occur in streaks — both winning and losing streaks are normal and expected.
After significant winning — normal trades feel boring.
The brain has recalibrated to a higher dopamine baseline. Normal setups do not generate sufficient excitement.
This leads traders to seek bigger positions, more volatile assets or more frequent trading — to recreate the dopamine high of a big win.
This is how a winning trader destroys their account after a great run.
Schedule trading sessions:
Limit exposure to charts. Constant monitoring elevates cortisol chronically.
Check charts at set times — not continuously.
Physical exercise:
Reduces cortisol. Increases clarity. Improves decision making.
Professional traders almost universally maintain fitness routines.
Meditation and mindfulness:
Proven to reduce emotional reactivity.
Improves ability to observe emotions without acting on them.
Written trading rules:
Externalizes decision making.
When rules are written — you follow the paper, not your feelings.
Journal everything:
Making emotional patterns conscious removes their power.
You cannot change what you cannot see.
In the next topic we will examine FOMO — the most common and most destructive emotion in crypto trading.