Here are a couple of useful Macintosh tools to help you stay focused while working at your computer writing, editing, or doing anything else that requires concentration. Isolator: I've been using this application on and off (literally) for a year. As its creator describes it, Isolator
will cover up your desktop and all the icons on it, as well as the windows of all your other applications, so you can concentrate on the task in hand.
Freedom: James M. Johnston recently tipped me off to this cool little Mac application. According to its website, Freedom
is an application that disables networking on an Apple computer for up to eight hours at a time. Freedom will free you from the distractions of the internet, allowing you time to code, write, or create. At the end of your selected offline period, Freedom re-enables your network, restoring everything as normal.