My full review is at http://bookwi.se/just-courage-by-gary-a-haugen/
This was a very good book. It was short, probably too short for the price. But I would rather have a good, tight short book than a long rambling one.
This is the story of International Justice Mission. An organization started to free people from slavery and forced prostitution around the world. Good stories. But the best parts were the two chapters on how to relate to poor and having courage to do something about injustice in the world. I recommend the book.