I think that is one of the most radical, yet true, statements I have ever heard. I am still processing it in my life and will do for some considerable time.
Andrew Wommack has just taught on his TV show on Self-Centredness being the root cause of all grief. It has been some very powerful, yet very clear Biblical teaching, and I have enjoyed it and been challenged immensely.
I firmly recommend it to all of you: http://www.awmi.net/tv/2008/week53