Yes, this is exactly how I feel when it happens to me. I know I need to stop. I try with all my strength to make it stop... but I can't shake it.... I hate it... It's like my brain is trying to put together a puzzle but doesn't have all the pieces, but if I don't solve the puzzle I can't move forward.

Sometimes: That is good advice about the time for worry. I've actually heard it before. If I could actually get my brain to agree with it, I would completely do that. The thing is.... it's far more powerful than just a worry. Or just something you keep thinking about. It's a driving force. And for me it causes compulsions like "I have to search this on the internet 1000 times." It doesn't relieve the anxiety or relieve the worry like part of my brain is hoping, and it often triggers it to get worse. So fighting the thoughts and the compulsions at once. I've had people say I might have OCD, but I have no actual rituals, just thought loops that come and then go. So, who knows. It's interesting that meds make it easier to deal with. That surprises me.