Researchers estimate complicated grief affects approximately 2 to 3 per cent of the population worldwide. It affects 10 to 20 per cent of people after the death of a spouse or romantic partner, or when the death of a loved one is sudden or violent, and it is even more common among parents who have lost a child.
The article written by Andrea Volpe and her examination of her own grief and how the path though and with grief in spite of what we've been told. It is thought that complicated grief is a dual-process model where we alternate between the emotional pain in the forefront of our minds to positive moments.
Here is a link to this article. It may shed some light on our grief process. Yet we all grieve differently in our own way. As unique as fingerprints. Reading about this process from many sides allows light to enter our grief wound.
https://mosaicscience.com/story/complicated-grief-bereavement-death-loss-CBT/