1. Why 90% of traders fail
Let's be honest: the vast majority of traders fail in prop firms. Not 50%, not 70%. We're talking 85 to 90% failure rate according to data published by the firms themselves.
And what's most frustrating about it? It's almost never the strategy that's at fault. Most traders who buy a challenge have a method that works — at least on paper or in demo.
The problem is behavioral. Emotions, bad habits and lack of discipline are what turn a profitable demo trader into an eliminated funded account holder.
⚠️ Brutal reality: Out of 100 traders who buy a challenge, about 10 succeed. And out of those 10, only 3 to 5 manage to maintain their funded account long enough to make regular payouts. The mistakes you're about to discover in this article are the exact reasons for these failures.
The good news? All these 5 prop trading mistakes infographic are identifiable and correctable. Each of them can be eliminated with discipline and the right tools. Here are the 10 most destructive ones.
in prop firms
analyzed
an account
per trade
2. Mistake #1: Overtrading
This is the number one mistake. The one that destroys the most accounts the fastest. Overtrading means trading too much — too many trades, too much screen time, too many instruments.
Why it's so destructive in a prop firm
In a prop firm, you have a limited drawdown. On a 50K$ account, your max drawdown is often $2,500 to $3,000. Each losing trade eats into this buffer. And when you overtrade, you multiply the chances of losing.
Imagine: you take 8 trades in a day instead of 2. Even with a 55% win rate, variance over 8 trades can easily give you 5 losers in a row. On ES with a 2-point stop, that's 5 × $100 = $500 loss in a single session. On a $2,500 drawdown, you just lost 20% of your buffer in a day.
💡 The rule: Cap yourself at 2 to 3 trades per day. If your first 2 trades are losing, stop. The best position is often the one you don't take.
Signs you're overtrading
- You trade out of boredom, not because there's a clear setup
- You increase your trading frequency after a loss
- You trade multiple instruments at the same time
- You stay in front of the screen 8 hours a day "just in case"
- You take trades that don't match your plan
3. Mistake #2: Not understanding drawdown
Drawdown is the elimination mechanism in prop firms. If you don't understand it perfectly, you'll be eliminated before you even realize it. To protect yourself, consult our complete risk management guide.
Trailing vs EOD vs Static
| Type | How it works | The trap |
|---|---|---|
| Intraday trailing | Moves up in real time with your gains | If you make +$600 then lose $400, you're still positive but your drawdown has tightened |
| EOD (End of Day) | Updates only at the close | More flexible, but watch out for overnight positions |
| Static (Fixed) | Never moves | The safest, but often more expensive |
⚠️ The classic trailing trap: You make +$1,200 in the morning. Your trailing has adjusted. In the afternoon, you lose $800. You're still at +$400 on the day... but your drawdown only has $1,700 of buffer instead of $2,500. Many traders get eliminated while in overall profit because they didn't understand this mechanism.
At Phidias Propfirm, you have the choice between EOD (End of Day) drawdown and trailing on OTP accounts, and fixed drawdown on Static accounts. This flexibility allows you to choose the type suited to your style.
4. Mistake #3: Revenge trading
You just lost $300. You're frustrated. You know you were right on direction. So you re-enter a trade immediately to "make it back".
That's revenge trading. And that's the start of the spiral.
The vicious cycle
- Initial loss → frustration, hurt ego
- Impulsive trade → entry without setup, oversized position
- Second loss → anger, panic
- Third trade → doubled position, mental "all-in"
- Elimination → drawdown blown in one session
This scenario plays out in less than 2 hours. A trader with a healthy account in the morning can be eliminated by noon.
✅ The solution: Set a daily max loss of 1% of the account (e.g. $500 on a 50K$). As soon as you hit it, close the platform. No negotiation, no exception. It's non-negotiable.
5. Mistake #4: Wrong position sizing
Position sizing is probably the most underrated skill in trading. Many traders calculate their size by feel or always use the same number of contracts without thinking.
The 1% rule
Never risk more than 1% of your account per trade. On a 50K$ account, that's $500 max risk per position.
| Account | Max risk (1%) | Stop on ES (2 pts) | Max contracts |
|---|---|---|---|
| $50,000 | $500 | $100/contract | 5 Micro ES |
| $100,000 | $1,000 | $100/contract | 10 Micro ES |
| $150,000 | $1,500 | $100/contract | 15 Micro ES |
⚠️ Fatal mistake: Trading 2 ES mini contracts ($12.50/tick) on a 50K$ account. A 10-point move against you = $2,500 loss, or the entire drawdown in ONE TRADE.
6. Mistake #5: News trading economic announcements
FOMC, NFP, CPI, PCE, earnings... These events create explosive and unpredictable volatility. The market can move 50 points in 5 minutes on NQ, in both directions.
For a prop firm trader with limited drawdown, it's suicide. You can be right on direction and still get eliminated by an initial spike in the wrong direction.
💡 Simple rule: No trade 30 minutes before and after a major announcement. Check the economic calendar every morning on ForexFactory or Investing.com. Mark high-risk days (FOMC, NFP) and reduce your size or don't trade at all those days.
The most dangerous announcements
- FOMC (8 times/year) — rate decision, the most violent
- NFP (1st Friday of the month) — employment data, brutal move
- CPI/PPI — inflation data, very volatile in 2025-2026
- Earnings of GAFAM — direct impact on NQ and ES
7. Mistake #6: No trading plan
Trading without a plan is like driving without GPS in an unknown city. You'll go around in circles, make bad decisions, and waste time and money.
What your trading plan should contain
- Instruments traded: ES and NQ only, for example
- Trading hours: 3:30pm-6:00pm (US open) for example
- Entry setup: precise conditions (e.g. break of structure + return on FVG)
- Stop loss: fixed placement, never moved
- Take profit: minimum R/R of 1:2
- Position size: calculation based on 1% risk
- Max trades/day: 2 to 3 maximum
- Max daily loss: stop if reached
✅ Tip: Write your plan on paper and place it next to your screen. Before each trade, re-read the conditions. If the trade doesn't tick ALL the boxes, you don't take it. Simple, but devastatingly effective.
8. Mistake #7: Starting with too big an account
You've never passed a challenge and you go straight for a 150K$? Bad idea.
The bigger the account, the bigger the psychological stakes. Seeing -$1,000 on a 150K$ stresses you out much more than -$300 on a 50K$, even though proportionally it's the same.
💡 The right approach: Start with a 50K$ account. Pass it, make your first payouts, understand the process. Then move up to 100K$ then 150K$. You can also manage multiple 50K$ accounts in parallel to diversify risk.
At Phidias, an OTP 50K$ with the LUCAS code comes out to about $116. It's a reasonable investment for learning. A 150K$ at $173 with the promo is still accessible, but psychologically heavier if it's your first challenge.
9. Mistake #8: Trying to go too fast
The target is 6% on most challenges. On a 50K$, that's $3,000 to reach. Many traders try to do it in 2-3 days.
That's the recipe for disaster. To make $3,000 in 3 days, you have to take huge risks per trade. One or two losing trades and your drawdown is fried.
The right pace
| Approach | Duration | Gain/day | Risk |
|---|---|---|---|
| Aggressive (bad) | 2-3 days | $1,000-1,500 | ⚠️ Very high |
| Normal | 10-15 days | $200-300 | Moderate |
| Conservative (ideal) | 15-25 days | $120-200 | ✅ Low |
$200 per day on a 50K$ account is 2 good trades on ES Micro. It's very doable without taking reckless risks. Take your time — the challenge isn't going anywhere.
10. Mistake #9: Addiction to challenges
Fail a challenge → buy another one immediately → fail again → buy another...
This cycle is financially destructive. At $100-200 per challenge, 10 failures = $1,000-2,000 lost. And worst of all? Without changing strategy between attempts, the result will always be the same.
⚠️ Warning signal: If you've failed 3 challenges in a row, STOP. Go back to a free simulator for 2 to 4 weeks. Analyze your mistakes with a trading journal. Only buy a new challenge once you've proven your profitability in demo for at least 20 days.
The right mindset
Treat each challenge as a professional investment, not a lottery ticket. You're not "playing" — you're investing in your trading business. And like any investment, it requires strategy and patience.
11. Mistake #10: Choosing the wrong prop firm
Not all prop firms are equal. Some have hidden rules, payouts that are nearly impossible, or conditions that change overnight.
Red flags to watch for
- No clear and detailed payout policy
- Recurring negative reviews on Trustpilot (especially on payouts)
- No responsive customer support or no English-language support
- Frequent rule changes
- Unrealistic earnings promises in their marketing
- No information about the company (no headquarters, no identifiable founders)
What to verify before choosing
- Track record: how long has the firm been around?
- Transparency: clearly displayed payout conditions
- Platform: Rithmic or CQG for futures (no shady proprietary platform)
- Support: responsive, available, ideally multilingual
- Path to Live: clear conditions to move from simulated to real
✅ Why Phidias ticks all the boxes: Established and transparent firm, Rithmic platform, multilingual support, clear payout conditions (80% from the 1st payout), path to Live after 3 consecutive payouts. With the LUCAS code, you also benefit from up to -80% off all accounts.
12. How to avoid these mistakes
Here's your anti-failure checklist to follow before each trading session:
Daily checklist
- ✅ I checked the economic calendar (no major news)
- ✅ My trading plan is written and in front of me
- ✅ My position size is calculated (max 1% risk)
- ✅ I'm limiting myself to a max of 2-3 trades today
- ✅ My max daily loss is defined ($X) — if reached, I stop
- ✅ I'm not trading under emotion (frustration, euphoria)
- ✅ I understand my drawdown type (trailing, EOD or static)
- ✅ My trading journal is open to log each trade
The 3 golden rules
💡 Rule #1: Patience is your best strategy. A good prop firm trader takes 1 to 2 trades per day, not 10.
💡 Rule #2: Protect your drawdown like your life. Every dollar of drawdown lost is one less dollar of buffer. You can always win tomorrow, but if you're eliminated, it's over.
💡 Rule #3: Start small, prove yourself, then size up. A well-managed 50K$ account is infinitely more profitable than a blown 150K$.
Now you know exactly which mistakes to avoid. The next step is to take action with the right prop firm and the right conditions.
To stay disciplined daily, set up a structured trading routine. And don't forget to prepare the administrative side: our guide on prop firm income tax declaration will save you nasty surprises with the tax authorities.
Ready to pass your challenge?
Use the LUCAS code to get up to 80% off on all Phidias Propfirm accounts — OTP, Evaluation and Static. Start with a 50K$, apply the rules in this article, and join the 10% who succeed.
View available accounts →