There is a tremendous difference between focusing on money and focusing on using your trading as an exercise to identify what you need to learn. The first will cause you to focus on what the markets are giving you or are taking away from you. The second perspective causes you to focus your attention on your ability to give yourself money. With the first perspective, you are placing some of the responsibility onto the markets to do something for you. With the second perspective, you assume all the responsibility.
– Mark Douglas, The Disciplined Trader