Focus is the ability to control what your own mind is working on. It is really about having control of your own mind. In modern society, the media has trained us to change our focus every few seconds. Television, games, books, and so forth are catering to this change, rather than making any effort to try to change it. When children are raised in this environment, it is even more harmful than it is for adults.
Jonathan Metcalf http://www.integritymartialarts.com/