Laura Miller asks, "why can't we concentrate?":
Winifred Gallagher's new book, "Rapt: Attention and the Focused Life" argues that it's high time we take more deliberate control of this stuff. "The skillful management of attention," she writes, "is the sine qua non of the good life and the key to improving virtually every aspect of your experience, from mood to productivity to relationships." Because we can only attend to a tiny portion of the sensory cacophony around us, the elements we choose to focus on -- the very stuff of our reality -- is a creation, adeptly edited, providing us with a workable but highly selective version of the world and our own existence. Your very self, "stored in your memory," is the product of what you pay attention to, since you can't remember what you never noticed to begin with.