This is the part most traders ignore.
When you’re profitable for the day and you:
Keep trading
Get greedy
Try to “milk” the market
What usually happens?
You give it back.
Locking your account (or setting a daily max gain rule) does a few powerful things:
🧠 It protects you from yourself.
After a win, dopamine is high.
You feel invincible.
That’s when overtrading starts.
💰 It protects capital.
Profit secured = progress locked.
📈 It reinforces discipline.
Every time you stop trading after hitting your goal, you’re telling your brain: “I follow my system.”
And discipline compounds just like money does.
Prop firms especially reward:
✔ Consistency
✔ Controlled drawdown
✔ Professional behavior
Not gamblers.