Keith Shealy is a good friend and a Christian who practices what he preaches. He's the best kind of neighbor (as his own neighbors can attest).
Keith has written and self-published several non-fiction books, all of which could be called Christian-living (though they're simply what God put in Keith to get out):
Letters from the Front
The Crisis of Eroding Integrity
The Secret to a Successful Life
Twelve Smooth Stones (in progress)
They are very good. The first is available on Amazon through Tate publishing, and we're hoping to get the rest up as ebooks.
The Toward the Mark link I've put up, by the way, goes to Keith Shealy's website.