Ashwani, you had to use your brain to not use your brain. Your system is automated based on your experience of your system, and so you enter and exit your trades based on the automation of how you set it up. It takes to not use your brain. In other words you have developed the mental discipline to just let your system do its thing to make you money.
dear paul,i am going to give my view here,it might be different from others but every one has his own way of thinking and experience which market gave him,i noticed that, when ever i used human brain in market hours ,market always prove me wrong,and when ever i followed my mechnical trading system during market hours market proved me right,so i followed a policy,i always used human brain to develop a system,to modify a system if required once in six month that too after market hours,but i never use human brain during trading, i would be glad to learn your experienced thought on it,you are so experienced that it will add some thing to my knowledge thanks[/QUOTE]