The Purpose Driven Life (2002) is a devotional book written by Christian author Rick Warren and published by Zondervan. The book has been on the New York Times Best Seller list for advice books for 174 weeks (as of May 2006). The book offers readers a 40-day personal spiritual journey, and presents what Warren says are God's five purposes for human life on Earth.

Since September 2002, over 30,000 congregations, corporations, and sports teams across the United States have participated in a "40 Days of Purpose" emphasis. A May 2005 survey of American pastors and ministers conducted by George Barna asked Christian leaders to identify what books were the most influential on their lives and ministries. The Purpose Driven Life was the most frequent response. The Purpose Driven Church, Warren's previous book, was the second most frequent response. The book has sold over 24 million copies (as of October 2006).

After hostage Ashley Smith read Chapter 32 to her captor Brian Nichols (who shot four people in Atlanta on March 11, 2005), the book hit number one on several religion and advice best-seller lists - including The New York Times, The Wall Street Journal, USA Today and Publishers Weekly. Smith admitted in her memoirs that she had also pacified her captor with crystal methamphetamine. Smith says Nichols had her bound on her bed with masking tape and an extension cord. She says he asked for marijuana, but she did not have any, and she dug into her illegal stash of crystal meth instead. Smith says in her book that as the night wore on — after Nichols had snorted some of Smith’s meth — she tried to win Nichols’ trust by talking about her faith in God and relating to him her personal stories.