The worst trait a poker player can have.

[TheCroShow]

obviously a question that has no right or wrong answer, matter of opinion.

i say a combination of many things, i cannot narrow it down to one thing.

-gambling problem. it goes with the territory though, it sucks but always do a self check and say "do i have a gambling problem?" i did that a while back.

-self discipline. kinda ties in with the gambling problem. some players play when they cannot afford to, move up when they cannot afford to. play junk hands, play weak hands only because they are getting impatient and see other weak hands winning, so they must hit like the others!

-ego. even top level pros say they are still learning every day. it's arrogant and silly to assume you know it all and can outplay anyone. the sooner you learn that there is much to learn at any level the better, the sooner you realize that anyone can win on any given night, the better.

my 2 cents for now. stating the obvious yes, but that's my opinion