I highly recommend George Barna's book "Revolution" ... I'm reading it for a second time now. It's fantastic.
BTW, if you would like to hear him read an abbreviated version of his book go to:
http://www.djchuang.com/media/barna_revolution.mp3
To read an excerpt click on the link below ... you'll love his affirmations of a Revolutionary [scroll down on the page] ...
click here to see them