Endings are a part of life, and we are actually wired to execute them. But because of trauma, developmental failures, and other reasons, we shy away from the steps that could open up whole new worlds of development and growth.
In both our personal and professional lives, there are times when reality dictates that we must stand up and 'end' something. Either its time has passed, its season is over, or worse, continuing it would be destructive in some way.
Some people's developmental path has not equipped them to stand up and let go of something.