Pastor of Saddleback Church, a Southern Baptist mega-church in southern California with weekly attendance of more than 15,000, Warren now applies his highly successful "purpose-driven" framework, developed in the best-seller The Purpose-Driven Church, to individual experience. The same principles Warren has taught to thousands of pastors to help churches be healthy and effective can also drive lives, he says. The book argues that discerning and living five God-ordained purposes-worship, community, discipleship, ministry and evangelism-is key to effective living.