42 things I wish I knew when I was 25 is a collection of concepts that I have come across during the last 15 years or so. Throughout the book, I offer my reflections on various learnings that I have had during my time as a strategy consultant, as a husband and father, while attending a top tier MBA, and when working in several management roles in multinational industrial companies. The concepts of the book can be broadly categorised into 5 areas: leadership, critical thinking, culture, business, and life hacks. Many recurring themes will be found throughout the book, with the importance of trust, bonding, and dialogue being some of the most prominent ones. The concepts covered in the book are discussed in bite-sized fashion for quick reference. The intention is to trigger the curiosity of the reader by offering personal reflections around leadership and life in general. I would have benefitted from reading this book when setting off on my professional and personal journeys as a twenty-five-year-old, and hope that you will feel the same!