Dr Stephen J. Costello is a prominent philosopher, corporate consultant, bestselling author, and practising logotherapist and existential analyst. He holds MA and PhD degrees in Philosophy from University College Dublin at the National University of Ireland and a Diploma in Logotherapy and Existential Analysis from the International Association of Logotherapy and Existential Analysis at the Viktor Frankl Institute of Vienna, of which he is a member. He is also a Diplomate in Logotherapy from the Viktor Frankl Institute of Logotherapy, USA, where he sits on the international faculty. He was the first person to introduce Frankl's work into Ireland and is Founder-Director of the Viktor Frankl Institute of Ireland which offers the only online course in classical logotherapy and existential analysis worldwide. He has written ten books, including The Truth about Lying, The Ethics of Happiness, What is Friendship?, and Philosophy and the Flow of Presence. His workplace seminars are in the areas of meaning at work, leadership, mental health, and decision-making.