Leadership, when exercised correctly and effectively in businesses, organizations, communities, families, and societies, is a critical factor for progress, social cohesion, and prosperity. However, as a concept and practice in Greece, it remains confused and often misunderstood, as leaders are often identified by a large part of society with those who hold power: top executives, rulers, demagogues, populists, and charlatans.

In a simple and understandable way, this book attempts to answer the main related questions such as what leadership and leader are, what is their purpose, what constitutes effective leadership behavior, as well as what characteristics of personality, values, knowledge, and abilities are required for effective leadership for the common good, both in the short and long term. It also provides an answer, based on science, to the question of whether leaders are born or made and how they develop.

This book offers essential knowledge, as every reader, even if they do not exercise leadership themselves, contributes to its existence and can influence it for individual and collective good through their choices and behaviors.