I am not sure if I've written about this before.
But here it goes:
As a child I threw a lot of temper tantrums. My mother would address them by simply saying "when we leave this room you are leaving that attitude with it".
Then I would walk through a doorway and leave my upset behind and walk on int0 a new day, unhinged by what was bothering me before.
I kinda wish I could do that now, I had a cruddy morning and keep trying to walk through doorways hoping to change it all.
I think this may be one of the magical things you lose when you grow up. Things bother you, and you can't just walk through a doorway to get over it.
You either have to shut the door, or open a new one.