I do not know one successful trader who is not disciplined. A loss never bothers me after I take it. I forget it overnight. But being wrongnot taking the lossthat is what does damage to the pocketbook and to the soul.
I think trading is a very disciplined job and if you are careless then you may not go beyond a certain points. There are tons of coins and lots of exchanges and you need to keep track of all your buying /selling etc.