Too much emotion is not good at all things. Like for example decisions made when you're anger. It can be a cause of losing your money or saying anything bad against your opponent or your friends around you.
Then you will never be a professional gambler if you are too emotional.
as a professional, your job is to always follow the game plan, and that you have to effectively implement it while you are gambling.
think yourself like a professional killer where the job is to kill a specific person, if that killer allows his emotion to ruin the job, that would not make the job successful since it will eventually affect the decision making.
as a professional gambler, it's always that our mind that is followed, and our emotional will be properly controlled.
If you play with your head instead with your feelings you have more chances to win! I agree with both of you,
there's no room for emotions on gambling table! In poker emotions will show what cards you have, are you weak
or strong, poker is not for emotional people.
I think I have a cool head, but I don't wish to be a professional gambler. I think except cool head you need
to have steal nerves, and I think with high blinds I can't have steal nerves.