My brain works a lot like this, too. I’m pretty sure I’ve got ADHD, but I was never diagnosed. Things also improved markedly when I started taking anxiety meds. I still struggle a bit, but it’s much less debilitating now that I don’t have a bunch of intrusive thoughts and other anxieties feeding it.

It’s now actually somewhat helpful because I’ve got it mostly under control, and allows me to connect really unrelated thoughts and evaluate them without going all the way down the rabbit hole.

Just don’t ask me to put the garbage bag in the garbage can after I take it out lol