What is health? This is a fundamental question that has not been answered by the medical profession. This small book attempts to offer a possible answer. With the overburdened NHS in the UK, it seemed the right time to write this book to support anyone who feels the need to take more responsibility for their own health in any tried and tested way possible. This is clearly stated in the book's title, that we can all learn to be Doctors of Health & Happiness with the right Lifestyle changes.