People have no idea how much this attitude can influence their trading results.One of the best rules anybody can learn about investing is to do nothing, absolutely nothing, unless there is something to do. Most people always have to be playing; they always have to be doing something. They can't just sit there and wait for something new to develop. I wait until there is money lying in the corner, and all I have to do is go over there and pick it up. I do nothing in the meantime. Even people who lose money in the market say, 'I just lost my money, now I have to do something to make it back.' No, you don't. You should sit there until you find something.
-- Jim Rogers
Person A trades only when he has a clear signal. Because he makes consistantly money he has more confidence. His winning rate is high so he is not afraid to trade and to wait for the perfect timing. Because he makes money there is no pressure to quickly trade again.
Person B cannot wait to trade. He jumps in and out with a much lower winning rate because he trades every possible move. Because he has constantly to recover from previous losses he has a lot of pressure to trade. The result is that he has no patience to wait for the perfect moment and makes more bad trades. The pressure to trade will impact his results negatively.
I daytrade but do on average around 2 trades a day. I have never more than 4 trades a day. I try to find the 2 best entries every day, and these entries I can find in general.