Me not following rules

Looking back all my problems come from not following rules. When I get into a trade all my rules seem to go in the bin. And I just ingore them and get emotionally attached to a trade. I need to develop a CLEAR and CUT trading plan where I am not allowed to enter trades ever without consulting my plan only then can I enter. Plan is a list of all your strategys and also all you mistakes so just glance over them while you are in a trade to give urself a reality check everyone once in a while :-) good night.