Being too greedy is not mistake it's a human nature i think..
But i can support your word that people can earn more profit if they being serious about their small profits. But in my opinion isn't it too much hard for low budget investor to reach that place..?
with a low budget I think it must collect a little profit. especially if we trade, I think it would be more suitable to multiply our money quickly. than we want investment and achieve large profits with small funds. if the trend against analysis that occurs is panic, therefore we must be able to control greed