Much like patience, the successful trader exhibits a simple, unexcitable mood in the face of a market that is in a constant state of flux. There is no way you can have emotionless trading. It is impossible unless you turn into a robot. What is possible is to bring your emotions under control. While others panic, cry, throw temper tantrums (and their computer monitors), doubt their trading edge, etc. you remain calm in the knowledge of your simple rules based methodology. You know when to enter battle, you know how long you can stay in battle, how many resources you can commit to battle ($), and when to exit the battlefield.