The purpose of the book <> - a handbook for living well, is to help people boost their immune system with healthy lifestyle, food medicine, herbal medicine, over-the-counter medicine, massage therapy, aromatherapy, exercise, etc. to treat any uncomfortable on the body when they just started. In this book, I focus on introducing preventive health maintenance methods and healing methods. Some of the methods I introduce in the book were handed down from generation to generation for hundreds of years for health issues, healing, and recovering from sickness. These methods make use of things you can find in your kitchen such as garlic, ginger, vinegar, etc. This book cannot replace doctors. Whenever you have persistent symptoms, you must go see your doctor. Keeping the air clean at home, at school, and at the workplace is especially important for people's health, survival, and happiness, as we have all learned from the COVID-19 virus being transferred through air. I sincerely want to introduce the new innovational product Ceiling Vent Eco Air Filters and Floor Vent Eco Air Filters to people to reduce the chances of getting Flu and Allergies. The product's brand is HEALTHIER & HAPPIER® which means the product contribute benefits to help people stay healthier and happier.