I started reading Chan's book "Crazy love", which is getting popular these days. We are starting to follow it in our campus Bible study.
In this book Chan argues that if you are not crazy about God or if your lifestyle does not reflect your craziness for God, then probably you don't know or understand who God is and what He has done and is doing in your life. That's why in this book Chan's goal is to educate the readers about who God is and what He has done and is doing for us. So that they can become crazy about God after reading it!
He starts with this great video: