Guinness now helps the reader discover answers to these questions, and more, through a corresponding workbook - perfect for individual or group study. According to Guinness, "No idea short of God's call can ground and fulfill the truest human desire for purpose and fulfillment." With tens of thousands of readers to date, is for all who desire a purposeful, intentional life of faith. Also availbale in audio format, narrated by Os Guinness.