People are biased to whatever will benefit them and that’s what makes them bad traders

You want the market to go up because you’re invested and can’t stomach more losses. So you NEED it to go up, suddenly bullish signals are everywhere.
Common sense is screaming at you but you refuse to accept it because if you sell here you’ve realised the loss.
Personal bias clouds you and becomes your judgement.
So you hold, and call it conviction.
Beating a dead horse is not conviction.