The title of my thesis is "Our Losses. Losses and Their Processing." My thesis focuses on the concept of loss and the process of coping with it, with particular emphasis on comparing two main types of losses: material losses and the loss of living persons. The aim of this work is to explore what grief truly means, what types exist, and how grief affects individuals both psychologically and socially. I also address the topic of death and mourning from a theological perspective. The thesis highlights that grief is not exclusively associated with death, but can also be linked to other kinds of losses. In comparing these two types, I examine similarities and differences such as the intensity of emotional reactions, the duration of the grieving process, and the role of societal attitudes. In conclusion, I have found that although everyone grieves, we do not do so in the same way or within the same timeframe. Grief is a natural and inevitable process that must be experienced in order to be truly overcome. At the same time, our society is often unprepared to deal with grief, which frequently complicates the support and understanding of those who are grieving.