Christ at the Center
A great interview about the difference between living by law or living by grace.
The gospel isn't "Follow Jesus' example" or "Transform your life" or "How to raise good children." The gospel is: Jesus Christ came to save sinners--even bad parents, even lousy followers of Jesus, which we all are on our best days. All of the emphasis falls on "What would Jesus do?" rather than "What has Jesus done?"
Also worth reading for the Luther quote halfway down.