Taleb talks about this specifically, his advice is to only check stocks occasionally that way you don't get the negative feedback from the down cycles. His arg

Taleb talks about this specifically, his advice is to only check stocks occasionally that way you don't get the negative feedback from the down cycles. His argument is that since stock generally goes up, if you're not constantly checking, when you DO check it will be higher than it was before and you'll feel positive about it.