Grief is accepting the reality of what is. That is grief's job and purpose-to allow us to come to terms with the way things really are, so that we can move on. Grief is a gift of God. Without it, we would all be condemned to a life of continually denying reality, arguing or protesting against reality, and never growing from the realities we experience.
Henry Cloud, John Townsend (2006). “God Will Make a Way: What to Do When You Don't Know What to Do”, p.210, Thomas Nelson Inc