I make dozens of trades in dozens of stocks every day. I employ a complicated trend system where i'm constantly having to take in 100's of data points on which to base my trading decisions. I'm looking at the relative performace of the various sectors, stocks within sectors, volume, moving avgs, futures, market tone, news stocks, tone of the CNBC anchors, ect. ect. I'm basically asking my mind to be a super computer. Making split second trading decisions based on interpretation of complicated info. And some days i just blow it. In the heat of battle I make trades that are obviously against the rules of my system. Or one indicator will lead me astray, even though it is obvious by the action of the stock that it should not be bought. Sometimes I will even find myself adding to losers even though it is a cardinal violation of my system. Cafeinated Soda seems to help the mind work. But besides this, does anyone have any suggestions how to stay on course? I've considered hiring an assistant to help me implement my system. If he could keep me from blowing $100k just one day a year he would pay for himself. Perhaps a premkt mental checklist on what your trading plan is would help. Maybe i should say to myself 20 times before mkt open "do not add to losers". I'm sure there are others out there with complicated systems where discipline to implement it is part of the battle.