You've done the hard part. You're 80% to the profit target. Your account is green. You've been disciplined for days.

Then something shifts.

You start calculating how many more trades you need. You think, "If I just size up a little, I can finish this week." You take a trade that's 1.5x your normal size. It goes against you. Now you're closer to the drawdown limit than the profit target. Panic sets in. You take another trade to recover. That one goes against you too.

Account blown. Not because you can't trade. Because you changed your process when you were closest to winning.

This is the most common failure pattern in prop firm evaluations. It's not a skill problem — it's a decision problem. Specifically, it's a failure in three areas:

1. Position sizing near the finish line. Most traders have no structured way to check whether a trade size is safe relative to their remaining drawdown room. They estimate. They round up. They size based on conviction instead of math.

2. Confusing daily and max drawdown. Traders know their max drawdown limit but forget that daily drawdown resets. They enter a session thinking they have room, but their daily limit is the binding constraint. One trade puts them in violation.

3. No post-win review process. After a green day, the instinct is to keep going. But near the profit target, every extra trade carries asymmetric risk — you have more to lose than to gain. Without a structured review that forces you to evaluate whether the next session is worth the giveback risk, most traders keep trading and hand back their buffer.

The fix isn't more chart time. It's better decision architecture:

• A pre-trade sizing check that runs before every entry

• A drawdown decision guide that tells you which limit is binding today

• A giveback prevention worksheet that forces a review after winning sessions

The traders who pass challenges are the ones who build boring, repeatable decision processes and refuse to deviate when the pressure increases.

If you're in an evaluation right now, ask yourself: Do I have a written process for what I just described? If not, that's where to start.