The Purpose Driven Life ~ by Rick Warren, founding Pastor of Saddleback Church in California. What on earth am I here for? If you feel you need a boost in your Christian life or need to come back to walking with God, this is the book for you. It takes you through 40 days of re-commitment to God. It changed my life. He takes you through 5 steps, which are: You were planned for God’s pleasure, You were formed for God’s family, You were created to become like Christ, You were shaped for serving God, and You were made for a mission. Like I said, it changed my life.