If I do have a problem then I write down every thought so it's out of my head for sleep. Nothing worse for me than trying to solve the problem mentally when trying to sleep.

Not who you replied to but I'm in the same boat re: sleepless nights. It's not quite literally that bad but it's distracting for sure. I just can't seem to leave enough breadcrumbs to stop ruminating about the problem after work. Of course working from home doesn't help the situation. But sometimes it feels like I have to leave so many breadcrumbs and capture so much context that I might as well just do the work...

I don't know.

Could be the ADHD. Over the day I have the meds, but they are bad for sleeping, so I can't use them at night.

The meds calm my thoughts, so I don't have too much competing ones over the course of a day.

On the other hand, there specific kinds of thoughts that don't prevent sleeping. When I think about loved ones for example, I sleep better.

But without meds, I can't control that. When I have unfinished business, it will override everything else.