Can we do something to ensure our well-being, to feel even more joy in living, and to enjoy our lives – to be happy? Are we the architects of our own happiness, or does it depend on circumstances beyond our control? This is a question that has been asked repeatedly for centuries. In ancient times, it was explored by philosophers; today, it is more of a topic for psychologists who seek to find answers through empirical research. The book takes into account philosophical approaches from long ago as well as the latest findings from empirical happiness research.