First, take a look at some book reviews on the Web by typing in "book review" in your search engine. Note that some are very short, more like a book announcement, while others are full length articles by a writer.
Second, make some notes answering the following questions about the book you are reviewing.
Is the book's topic relevant to public concern today?
Is this message needed in our society today?
What is the problem and what is the solution offered?
Identify the major topics and define each in your own words.
What is the relation of these topics to health or stress?
Do the media play a role in this topic?
Is this topic related to anything in your background as a psych major?
What did you enjoy about this book?
Quote one or two passages you found worthwhile.
What did you learn from this book?
What were the strengths and weaknesses of this book?
What other reviews have you found of this book or topic on the Web?
Who should read this book?
How is it relevant for children?
How is it relevant to education?
Add any other questions or points you might think of yourself
Third, review your notes and start typing out your book review. Do not put the questions in your review. Use your own organization and sub-titles. When your draft is done go over it with the questions to make sure you covered every one.