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Which Execution Mistakes Cost You the Most?

A good setup can still lose money if you trade it badly. Log your execution mistakes and what each one cost, and you'll know which habit to fix first.

Written By

Karolina Hansen

Updated 26/10/2026 · 5 min read

ForexGold

Key Takeaways

Execution is how you carry out a trade: your entry, your stop, your exit and how often you trade.
Log every mistake in your review, winning trades included.
Measure each mistake by what it cost you compared with sticking to the plan.
The mistake you make most often isn't always the one that costs most. Fix the expensive one first.

Your strategy decides which trades you take. Execution decides how well you take them. Two traders can run the same gold setup and end up miles apart. One gets in on time and sticks to the plan. The other chases, drags the stop and bails early. Execution mistakes are usually easier to fix than a broken strategy. You just have to be able to see them first.

The Six Execution Mistakes That Keep Showing Up

Closed early

Getting out before your stop or target because of nerves rather than a rule.

Chased the entry

Getting in after price had already left your entry zone, so the stop ends up wider or the target closer.

No confirmation

Getting in before the signal your plan waits for had actually appeared.

Moved the stop

Pushing the stop further away as price came towards it, so a planned loss became a bigger one.

Re-entered after a loss

Jumping straight back in to win the money back, with no new valid setup.

Overtraded

Taking more trades than your plan allows for the day or the session.

Log mistakes on your winners too. If a trade won after you moved the stop, the mistake was still there. The market just didn't punish it this time.

How to Measure What a Mistake Cost

A mistake costs the difference between what the trade actually did and what it would have done if you'd followed your plan. Here we measure it in US dollars.

Mistake	Worked example on XAUUSD	Cost
Moved the stop	Planned loss −$100. Stop moved, trade closed at −$250.	$150
Closed early	Target was +$200 and price reached it. You closed at +$80.	$120
Re-entered after a loss	No valid setup by your plan. Trade lost $100.	$100

Only count 'closed early' as a cost if price really did go on to hit your target. If it would have hit your stop instead, closing early cost you nothing on that trade.

The Most Common Mistake Isn't the Most Expensive

The illustrative journal below covers 70 trades. The first chart counts how many times each mistake was logged. The second shows what each one cost altogether.

Illustrative journal: how often each mistake was logged

Overtraded10

Closed early9

Chased the entry8

No confirmation7

Re-entered after a loss6

Moved the stop5

Illustrative example for education, not real data.

Illustrative journal: total cost of each mistake

Moved the stop · 5 times−$950

Chased the entry · 8 times−$600

Re-entered after a loss · 6 times−$500

Overtraded · 10 times−$400

No confirmation · 7 times−$300

Closed early · 9 times−$250

Illustrative example for education, not real data. Cost compared with following the plan.

Moving the stop was the rarest mistake and the most expensive one. It cost $950 over 5 trades, or $190 a time. Overtrading happened twice as often and cost less than half as much. If this trader started by working on overtrading, they'd be plugging the wrong leak.

Clean Trades vs Trades With a Mistake

A clean trade is one with no execution mistake logged against it. Put your clean trades next to the rest and you can see how much of your result comes from the strategy and how much leaks out in execution.

Illustrative journal: clean trades vs trades with a mistake

Clean · 42 trades+$1,400

With a mistake · 28 trades−$1,100

Illustrative example for education, not real data. Average per trade: clean about +$33 ($1,400 ÷ 42), with a mistake about −$39 (−$1,100 ÷ 28).

In this example the strategy works. The clean trades made $1,400. Most of the damage came from how the trades were carried out, and that's good news, because it's something the trader can control.

Fix the Most Expensive One First

Log every mistake

Tick any mistakes in each trade review, on winners and losers alike.

Estimate the cost

Compare the actual result with what you'd have got by following the plan.

Pick the most expensive

Sort by total cost rather than by how often it happens. Work on one mistake at a time.

Add one guard rule

For a moved stop, put the stop in as an order and agree never to widen it. For re-entries, take a short break after any loss.

Check again in a month

See whether that mistake is costing you less before you move on to the next one.

Your TradersGrowth Journal shows this on the Execution, Mistakes and Quality statistics cards, using the mistakes you tick in each trade review.

See which execution errors you make most, and which ones cost you most.

Open Your Journal

Frequently Asked Questions

A strategy mistake is when the rules themselves don't work. An execution mistake is when the rules were fine and you didn't follow them. Your clean trades help you tell the two apart.

Yes. A winning trade with a mistake in it rewards the wrong behaviour, which is how bad habits stick. Logging it keeps your record honest.

Add up the results of the trades you took beyond your plan's limit. If your plan allows three trades a day, it's the fourth and fifth that count.

Educational content only, not financial advice. Examples are illustrative. Trading involves risk, and past performance does not guarantee future results.

Continue learning

Price Action Trading: Reading the Chart Without IndicatorsThe basics of price action trading. How to read the market without indicators and base your decisions on what price is actually doing.

Also worth reading: Risk Management Basics: Decide What You Can Lose Before You Trade · What Is Liquidity in Trading?