My intention is not to judge, sorry if somehow I led anyone to feel that way. I am not 'off base' in suggesting we can become stuck in a holding pattern. Unable to progress, caught in a cycle of grief, bound by resentment, tortured by self doubts.
A counselor insightfully described those feelings as symptoms of incomplete recovery. The refugee metaphor aptly describes the sense of remaining outsiders when surrounded by new people and experiences. This may be normal for a while but if it never passes, that person has lost out on what a new life has to offer.
If in any way you can relate to this, it's not a sign of failure, it may mean it's time for the next step.