The #1 Cardinal Sin of Trading is...?

There's a lot. But the biggest evil, in my mind, is constantly rationalizing your mistakes, which in turn hardens into a unbreakable habit.

 

Never invest or trade with money that you can't afford to lose.

 

size.

 

I agree, but also disagree. You can't level up without taking a risk.

 

Yep.

 

Too much time reading ET posts instead of developing strategy

 

Shorting TLSA...(very trendy topic at the moment).

 

Impatience. If I'm waiting for the setup then I must wait for the actual setup. Not the "that's almost it and I don't wanna miss it so screw it I'm gonna just take the trade now", um, setup.

 

I dunno...... TLSA is near all-time lows, with no big issues (announced) on the horizon = looks like a fair short.

 

Trading your P&L instead of trading your method.