To plug his book The Purpose Driven Life, Rick D.

FORBES: Promote It Yourself

When it came time to launch his book, The Purpose Driven Life, last year, Warren used Pastors.com to invite churches to participate in a "40 Days of Purpose" event (to correspond with the book's 40 chapters).

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Warren's 2001 book, The Purpose-Driven Life, is this decade's best seller with 19.5 million copies sold so far and compiling at the rate of 500, 000 per month.

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Its sequel, The Purpose-Driven Life, has sold 12 million copies.

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Warren, who founded Saddleback with his wife 33 years ago, gave the invocation at President Barack Obama's 2009 inauguration and penned "The Purpose-Driven Life, " a Christian self-help guide that became a mainstream best-seller.

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Closer to the American mainstream are the box office film hit (which no one had predicted) The Passion of the Christ and the bestseller book by Rick Warren, The Purpose-Driven Life, which has sold more than 15 million copies.

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In fact, following the success of his book, A Purpose Driven Life, he stopped taking a salary from his church and even gave back the salary he earned during his first 25 years with Saddleback.

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