very good article.though i would like to add that one should balance greed with temptation.Be satisfied with marginal profits and be tempted to book but at the same time greed also is an important ingredient in day trading.unfortunately there are no hard and fast rules to be followed in market.every minute and every stock demands new strategy.history cannot be trusted for future strategies even if it is the same stock in similar market.therefore greed+temptation(in the right proportion)=profit
