This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book presents various aspects of the grieving process and contend that these aspects would apply to all of the above losses. It focuses on the loss of a loved one, leaving the reader to apply the principles explored to other losses as appropriate. The book also presents a number of reflections drawn from some thirty years of working as a therapist in a number of different settings. Loss and its consequences beset most of people at one time or another. Grief, the feeling engendered by loss, is most often associated with the loss of a loved one, but it encompasses other losses too. It might be the loss of a way of life, a relationship, a job, country, home, or physical abilities, to name but few.