When I was a child I had this nightmare there was a witch hidden into the floral pattern of my bedroom curtains.
I saw the witch both while i was sleeping both when i woke up in panic, in a horrible loop. Same thing happened with nice dreams, they stayed with me all day long like a sugar trail.
But one day i realized that dreams were just dreams and something strange happened.
I started to be happy after every nightmare, because real life was better indeed, and I began to be afraid of sweet dreams... don't know why...