<p>Discover the series from internationally bestselling author Gwendoline Smith on how best to manage mental health difficulties.<br><br>Grounded in CBT, this collection of New Zealand psychologist Gwendoline Smith's bestselling mental-health self-help books offers practical, accessible advice for all the key areas of your life, helping you regain control over feelings of overwhelm (THE BOOK OF KNOWING), how to stop the cycle of worry (THE BOOK O...