Keeping a level head is awesome. A Trader knows that he/she is wrong or right the second they execute. I now take big profits and discounted losses. When we let ego play a part people commit suicide of their accounts. Adding to losing trades thinking that the Market will correct in the direction of their wrong execution. The Market tells you everything you wish to know. However everything is engineered to have you doubt self. That's where an efficiency model (as I've mentioned in my other thread discussions) plays a role in confidence and not arrogance.