I t is called intrusive thoughts and happens mostly when something happenned that you cant get closure about it ,therapy or sometimes a lot of fresh air and long walks can help. Good luck.
Brood
The term for continuously worrying or thinking about something is "rumination." This involves repetitively focusing on distressing thoughts or problems, often leading to increased anxiety or stress. It can hinder problem-solving and emotional well-being, as it keeps individuals stuck in a cycle of negative thinking.
The word for to keep worrying or thinking about something is brood / brooding. A person can also ruminate / engage in ruminating.
Stressed
BROOK
If you feel like you wouldn't do something but keep on thinking you would then you aren't sure of yourself.
when you are worrying or thinking about some thing
When Scout says she was "worrying another bone" in To Kill a Mockingbird, she means that she was fixating on a particular topic or idea, much like a dog might obsessively chew on a bone. It suggests that she couldn't stop thinking about something that was bothering her.
by thinking about the things you have done and not worrying about it
some people pick out there eye lashes bacause they are either worrying about something or there thinking of something. in other cases some people dont realse there doing it.
wonder
wakeing up, worrying , stress of thinking