Lots of people have difficulty with doorways. There’s something in our bones that distrusts them, while at the same time affording them great importance: stepping through a doorway is the beginning of an adventure, or the turning point in a horror story.
I find it very hard to get it through my head that, no, I won’t “finish this bit off tomorrow”*. I’ve always had a bit of an issue coming to terms with things ending. This might be the longest thing that I have ended.