This book focuses on the symptoms of psychosis. This medical issue is oftentimes present in the "big three" of severe mental illnesses. After Psychosis addresses common misconceptions and common complaints from sufferers, and it delves into biblical solutions for their accompanying spiritual struggles. It is meant to come alongside both those suffering and those who are indirectly affected by these illnesses.

Because it is a book focused on the spiritual struggles of those suffering, its primary content centers on the Bible and how it addresses such issues as not believing the best about others, suspicion, rash judgement, pride, and more. However, medication and a medical exam are a required first in these severe cases, but biblical guidance is also critical in addressing these issues of the heart with significant spiritual help.

Psychologists and psychiatrists often cite the benefits of spiritual guidance to those suffering. This book examines the claims of neurobiologists to that effect, but it also addresses myths surrounding demon possession, as well as myths regarding certain cultural claims as to causes of severe mental illnesses. The goal is to find our satisfaction in trusting God rather than only relying on the very real benefits of modern medicine alone.