10 Common Trading Mistakes and How to Fix Them

A trade moves against you. Instead of accepting the loss at your defined stop, you move it wider to give the trade "more room." The original stop was your invalidation point — the level where the thesis is wrong. Moving it means you are now holding a position whose thesis has failed because you cannot accept the result.

Define the stop before the trade opens and treat it as non-negotiable. Log every trade where you moved a stop in your journal — pattern awareness is the first step. Reduce position size if stops feel too painful, rather than widening them.

Overtrading is not trading too often. It is trading without edge — entering because you are bored, because you feel you should be in the market, or because FOMO is louder than your rules. These trades have no statistical basis and over a large sample will produce a negative expectancy regardless of your strategy.

Complete a written pre-trade checklist before every entry. Each item corresponds to one of your entry criteria. If any box is unchecked, the trade does not open. Log the number of "no-setup" trades per session — most traders find they overtrade most on their worst days, which creates a compounding effect.

Position sizing that risks more than 1–2% per trade creates disproportionate emotional pressure. When a trade is oversized, every adverse tick feels threatening — and emotional decision-making follows. Oversized positions are the most common driver of stop-loss moving, early exits, and revenge trading, because the dollar amount at stake is activating fear rather than calculation.

Calculate your exact lot size before every trade using a consistent formula: account balance × risk % ÷ (stop-loss pips × pip value). Use the Position Size Calculator so sizing is mechanical, not estimated. If you feel anxious about a position, check your size — it is almost always the root cause.

After a loss — especially one that felt unfair or unlucky — the urge to immediately re-enter to "get the money back" overrides the usual entry criteria. The revenge trade is usually larger, less well-planned, and entered in worse market conditions. It typically produces a second loss, compounding both the financial and emotional damage.

Implement a mandatory pause after any loss: step away from the platform for at least 10 minutes, log your emotional state in your journal, then review your last three trades. If you cannot describe a clear setup for your next entry in one sentence, do not enter. Read the full guide: How to Stop Revenge Trading.

This is the most universal pattern in retail trading data. The psychological pain of watching a winner reverse feels worse than the pain of holding a loser "in case it comes back." The result: average win size is smaller than average loss size, which means your win rate needs to be abnormally high to be profitable — a bar most strategies cannot clear.

Define your take-profit before the trade opens and treat it with the same discipline as your stop-loss. Log your planned target and your actual exit on every trade, then calculate how often you exited before target. Most traders are shocked by this number. Use the Risk/Reward Calculator to confirm your target makes sense before entering.

A trading plan held only in your head will shift under pressure. Rules that feel firm when the market is calm become negotiable when a setup is almost-but-not-quite there, or when you have just had a losing run. A written plan creates an external commitment that is harder to rationalise around in the moment.

Write your plan down, including markets, risk percentage, entry criteria, exit rules, and daily loss limit. Review it at the start of every session. See How to Build a Trading Plan for a step-by-step framework.

Scheduled news releases (NFP, CPI, central bank decisions) create temporary price dislocations that have nothing to do with technical setups. Spreads widen, slippage increases, and price can spike through stop-losses before returning. Holding positions through news events exposes you to outcomes that your edge model cannot account for.

Check an economic calendar before every session and identify high-impact events. Either close positions before major releases or widen stops to accommodate news volatility — but log your decision and the rationale. Tracking your news-related P&L separately will quickly reveal whether this is a leak for you.

Adding to a losing trade — "averaging down" — is the mechanism behind many of the largest retail account blowups. It converts a defined, manageable loss into an exponentially growing one, because each new addition at a worse price means the original position needs a larger recovery move to break even. The logic feels compelling in the moment: "the further it has moved, the more likely it is to come back." The data does not support this reasoning.

Set a rule: no adding to positions where the original stop-loss has been hit or is within 10 pips. If a trade is going against you, the original thesis may be wrong — the correct response is to manage the loss, not increase the exposure.

A daily loss limit — the maximum amount you will lose in a single session before stopping — is one of the most effective circuit breakers in trading. Most traders set one and then ignore it when they have "almost" made it back. The result: the worst losing days are the ones that could have stopped at -2% but ended at -6% because you kept trading to recover.

Set your daily loss limit as a concrete dollar amount or percentage (typically 2–3% of account). Treat a breach of this limit as a mandatory end-of-session rule, not a guideline. Log every session where you hit the limit and the decision you made — you will quickly see whether you are honouring it.

Without a journal, the mistakes above repeat indefinitely — invisibly. You may have a vague sense that you sometimes move stops or overtrade, but without data you cannot see how often it happens, in which conditions, or what it costs you. The same patterns recur across months and years because there is no feedback mechanism forcing you to confront them.

Start a journal today, even a basic one. The data does not need to be perfect from day one — it needs to be consistent. Log rule adherence (did this trade meet criteria: yes/no) and emotional state on every trade. Within 30 trades you will have enough data to see your own patterns clearly. See What Is a Trading Journal to understand what to track and why.