I had been a reasonably successful trader from 1998 to 2003. I have a system and was very disciplined. For some reason around the end of 2003 I have had a breakdown in my disciplines almost a mental block where I cant get out of losers. I see my positions not working, freeze and then am unable to get out with a small loss. I have been able to put together several very good streaks in that period but once a have a bad day the freezing has started again. Has this happened to anyone else and how can I combat this?