Moods

I couldn't settle down yesterday evening. I suppose I was waiting for upstairs to start up, so couldn't relax properly. While thinking about my Sunday night, I started to feel really sad too. I don't know why, but I've been bombarded with miserable thoughts ever since. My sleep was miserable too, and I woke up a few times before getting up at six this morning. Is my brain in self-destruct mode again, again?