I've had a few sleepless nights recently due to losing my df and worried about my dm, and worrying about my adult son struggling in life atm.
I've had a lot of sleepless nights over my adult DCs in general, but also been awake in the night thinking about getting older, regrets and questioning myself why didn't I xyz eg stand up for myself to the rude neighbour, wave back to an old friend I hadn't seen in years etc
So what sort of things do other people think about at 3am?