You walked into the casino with $1000.
Played 5 rounds, $100 each.
Lost them all.
You're down 50%.
No big deal, right? Just make 50% back?
WRONG.
You need 100% to get back to where you started.
Now:
Down 70%? You need +233%
Down 80%? You need +400%
Down 90%? You need +900%
The deeper the hole, the steeper the climb.
Math doesn't care how confident you feel.