Better Focus and Concentration
By way of Lifehacker I found a really cool article on how to exercise your mind:
You can find strong powers of concentration in yourself. When you are decisive and sincerely want to excel in your studies, pass an important exam, or playing one of your favorite games; the power of concentration becomes available to you. This kind of concentration is raised because of some need, or desire. Increasing it in a systematic way, brings it under your control, and grants you the ability to use it easily, with no exertion whenever you need it. Real and good concentration is developed slowly, through daily work, and with special exercises. It has to be approached in a reasonable and practical way.
Read more at the EgoDevelopment blog, and see also my recent reference to a great DVD on the subject.