Mistakes 1–3: no plan, positions that are too big, moving the stop
1. Trading without a plan. Without written rules, every decision is made in the moment, under pressure. Fix: before the session, write down what you trade, your setups, your stop and target rules, your size and your loss limits; the trading plan lesson has a template.
2. Positions that are too big. A large size turns a normal losing streak into a deep hole, as the drawing below shows: five losses in a row at 1% risk each take a $10,000 account to about $9,510, while at 10% they take it to about $5,905, which then needs about +69% just to get back. Fix: risk a small, fixed share of the account per trade (many traders use 1% or less) and size from the stop with the position size calculator.
3. Moving the stop lower. Dragging a stop away from price turns a planned 1R loss into 2R or 3R, and it rarely happens only once. Fix: set the stop where the trade is proven wrong before you enter, and only ever move it in your favor; see stop loss and take profit.
Mistakes 4–5: revenge trading and overtrading
4. Revenge trading. After a loss, the urge to win it back right away leads to a bigger size and a weaker setup, then a bigger loss, and the loop in the drawing below starts again. Fix: a daily loss limit set in advance (for example −3R) and a rule to step away after two losses in a row; trading psychology covers the loop in depth.
5. Overtrading. Taking trades because you are bored, or because the screen is open, adds costs and lowers the quality of each trade. Fix: a short list of setups you trade, a cap on trades per day, and no order that has not passed the checklist in your plan.
Mistakes 6–7: chasing the move (FOMO) and averaging down
6. Chasing the move (FOMO). Buying after price has already run far from the level means the logical stop is far away and the target is close, so the trade has poor risk/reward before it starts. Fix: if the entry is gone, let it go and wait for the next setup, such as a pullback; see the pullback trading strategy and the risk/reward ratio.
7. Averaging down a loser. Buying more as a trade falls lowers your average price but raises your size exactly when the market says you are wrong. Hypothetical: 100 shares at $50.00, 100 more at $47.00 and 100 more at $44.00 average $47.00; a further drop to $41.00 now costs $1,800, against the $900 the first 100 shares alone would have lost. Fix: cut the loser at the planned stop, and add only to positions that are working, when your plan allows it.
Mistakes 8–10: ignoring earnings, no journal, strategy hopping
8. Ignoring earnings and news. Earnings reports and major economic releases can gap a stock far past your stop overnight. Fix: check the earnings date and the economic calendar before every trade, and decide in advance whether you hold through the event, usually at a smaller size; the gap trading strategy shows how gaps behave.
9. No trading journal. Without a record you cannot tell bad luck from a bad habit. Fix: log every trade with the setup, entry, stop, exit, result in R and one line on how you felt; the trading journal lesson shows what to record.
10. Strategy hopping. Switching methods after a few losses means no method is ever tested long enough to judge. Fix: stick with one written strategy for a fixed sample, for example the next 30 trades at small size, then review the journal before changing anything.
How to stop repeating trading mistakes: a weekly review
Knowing the list is not enough: most traders who make these mistakes already know them. What helps is a routine that catches them on paper before they repeat:
- Before the session: reread your plan, your risk per trade and your daily loss limit.
- Before each order: write down the entry, stop, target and size, and check that the trade passes your checklist.
- After the session: log every trade, including the ones where you broke a rule.
- Once a week: count rule breaks by type, pick the most frequent one and write one rule to fix it. The risk management lesson ties the limits together.