Habits of a Happy Brain: Retrain Your Brain to Boost Your Serotonin, Dopamine, Oxytocin, Endorphin Levels Discover a fun new way to lift your spirits in just 45 days! Habits of a Happy Brain guides you through retraining your brain to activate the feel-good chemicals—serotonin, dopamine, oxytocin, and endorphins. With easy, playful exercises on every page, you’ll learn how to create fresh brain pathways that make happiness easier to reach. Packed with practical activities, this book helps you build joyful habits and enjoy a brighter, healthier life!