In the first two chapters, Paul relates his own experience of dealing with an anxiety disorder, as well as sharing the (anonymous) stories of other Christians who've experienced something similar, before outlining the way that psychology and medicine have developed in their thinking about anxiety.Chapter three launches the heart of the book: an in-depth consideration of how the Bible forms and addresses our understanding of anxiety. This includes personal teaching and wisdom for those dealing with a disorder for themselves, as well as focused advice for those caring for someone with anxiety.

Throughout the book, Paul shows how the gospel addresses the pain and difficulty of anxiety. For example,what is the relationship between anxiety and sin, and how does the gospel address this relationship? How does the gospel offer hope in the face of this type of suffering?