Greed really has an effect on trade because with greed a trader usually trades more and takes traders who are not meant to be taken and greed makes traders to trade excessively which is a very bad type of strategy. And if you are a trader, avoid greed than he is in a good direction to get success and greedy effects will make traders lose common sense. most will expect incoming entry to take the desired profit or target when the target market will not be traders. therefore it is better to use trailing stops from taking too much profit