If you're a fan of the "Purpose Driven Life" series OR are simply searching for a good Christian journal to put your thoughts down and stimulate your spiritual thinking, consider this book. A few of the things I liked about it:
-there's plenty of space for writing down your thoughts
-inspiring passages on most pages
-decent questions to ponder
I guess you could consider this as a kind of "workbook" too- not simply a place to jot down what's on your mind as the questions point you to specific areas. A decent little journal, I doubt most will be disappointed. Also recommend Finding Happiness in a Frustrating World to help get one's life goals on track.