8. Trading Psychology

You can have a perfect system and still lose money — because you are the weakest link. The market is a mirror; it will find every flaw in your discipline and exploit it.

The four horsemen of account destruction

1. Fear

Closing winners too early (“locking in profit” at 0.5R when target was 3R).
Not entering valid setups because the last trade lost.
Hesitating at entry, getting filled at worse prices.

Fix: Pre-define everything. If the plan said exit at 3R, exit at 3R. Use limit orders for targets so you don’t have to “decide” in real time.

2. Greed

Holding past target hoping for “more.”
Oversizing because “this one is a sure thing.”
Adding lots after a few wins (overconfidence).

Fix: Hard rules on position size. Trail stops mechanically. Take partial profits at planned levels.

3. FOMO (Fear Of Missing Out)

Chasing a stock that already ran 8% — entering at the top.
Jumping into trades you didn’t plan because “everyone is making money.”

Fix: The next setup is always around the corner. Missing a move costs you nothing; chasing one costs you real money. Maintain a watchlist and only act on your setups.

4. Revenge trading

After a loss, immediately doubling down to “win it back.” This is the fastest known way to blow an account.

Fix: Daily loss limit. Hit it → step away. Walk, eat, sleep. Markets reopen tomorrow.

Cognitive biases to know

Bias	What it does	Antidote
Confirmation bias	You see only what supports your trade	Actively look for the bear case
Loss aversion	Losses hurt 2× more than equal wins feel good	Pre-defined stops, mechanical exits
Recency bias	Last few trades dominate your judgment	Review 50+ trades together, not last 5
Anchoring	Fixating on entry price	Price doesn’t know your entry. Trade what’s in front of you
Sunk cost fallacy	”I’ve held it this long, can’t sell now”	Each moment is a fresh decision: would I buy at CMP today?
Overconfidence	After a winning streak you feel invincible	Cap position sizes regardless of recent results
Hindsight bias	”I knew it would go up” — but you didn’t act	Journal predictions in advance

The pro mindset

Probabilistic thinking

Each trade is one outcome from a distribution. A losing trade ≠ a bad trade. A winning trade ≠ a good trade. Only the process is good or bad. Over 100 trades, a good process wins; over 1 trade, anything can happen.

Detachment from individual trades

You should care about the next 100 trades, not the next one. If any single trade can hurt your psychology, your size is too big.

Boredom is the goal

Good trading is repetitive, mechanical, and boring. If trading feels like gambling, you’re doing it wrong. Excitement = leakage.

Process journal vs P&L journal

Two journals:

P&L journal — what happened.
Process journal — what you did. Did you follow rules? Did you size correctly? Did you respect your stop?

Grade yourself on process, not P&L.

Practical habits

Trade plan written before market open. Watchlist, key levels, max trades for the day.
Set alerts, don’t stare at screens. Constant watching invites tampering.
No news during open positions. Decide thesis once; let the chart do the talking.
Sleep, exercise, no booze before market. Trading is a performance sport.
Review weekly. Trades, screenshots, what worked, what didn’t.
Define an “off” day. Saturday — no charts, no Twitter / X. Reset.

Red flags — get help / take a break

You hide trades from your spouse / family.
You’re trading borrowed money.
A loss ruined your weekend / sleep.
You’re using “just one more big trade” to recover.
You feel an emotional rush from trading.

These are signs of trading addiction, which is real. Step back. Talk to someone.

“The market is a device for transferring money from the impatient to the patient.” — Warren Buffett