Rick Warren uses 319 pages in his wonderful book to describe the Purpose Driven Life, but eloquently sums it all up in the first line -- "It's not about you!"

It is about loving and serving God and your fellow man. It is about the greatest commandment:

Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength. Love your neighbor as yourself. There is no commandment greater than these. Mark 12:30-31