Book excerpt: This book introduces you to the science of happiness. It takes you on a journey of discovery through the science of psychology and its newest branch, positive psychology. It includes a review of scientific research on happiness; a recipe for your own happiness-with recipe card; a personal method to distinguish among happiness, pleasure, and contentment to help you focus on what matters most; measures of your happiness, pleasure, and contentment within eleven parts of your life; tools to help you gain true happiness, better health, and increased longevity; personal activities that can make you happy in a moment's notice; and, methods to transform your emotions from negative to positive.