We hear the words "happiness", "happy" at every step. We want to be happy. But what is happiness? Aristotle was the first philosopher to study this subjective model. The author of the book, fully agreeing with Aristotle's statement that the main duty of a person and his great gift is the pursuit of personal happiness, helps us go the way to finding it with the help of the philosopher's observations and advice. Each chapter of the book provides a specific philosophical lesson, illustrating the most important daily issues for us, such as making decisions, finding a job, understanding our own character, maintaining health, choosing friends and loved ones, fulfilling a social duty, resisting negative phenomena, and rebuffing circumstances. The reader will learn how the time-tested teachings of Aristotle can help us become happier at any stage of life and at any age.