People tend to write about grief in the context of a death, but there are many sources of grief. We see grief reactions in all sorts of losses: loss of physical or mental capacities, losses of a relationship, disappointments and failures in dreams or careers, financial losses, loss of a home, and so forth.
It is inevitable in life that we accumulate scars. Most griefs scar over in time. New adaptations are achieved. Sometimes, grief does not relent.