Flagging The Problem: A New Approach to Mental Healthóis made up of five main sections. Each is marked with a coloured flag, represents a particular mental state or area of concern: Green Flag explains the normal mood system, the Red Flag deals with depression, the Yellow Flag addresses anxiety, the Purple Flag deals with addiction and the White Flag addresses the issue of suicide. There is a technical section, and extra appendices at the end of the book, including information on self-help groups and a list of commonly used medicines.