Switch On Your Brain: The Key to Peak Happiness free pdf book download from here or read it online completely free. “Switch On Your Brain: The Key to Peak Happiness, Thinking, and Health” is a transformative work by Dr. Caroline Leaf. It delves into the profound influence of our thoughts on our overall health. The book posits that a significant percentage of diseases are linked to our mental processes. Dr. Leaf introduces a ‘21-Day Brain Detox Plan’, a practical guide to cleanse our mind and enhance our health, happiness, and cognitive abilities.