How stuck does your brain get?

In your head are all these new thoughts floating in and out, or do mostly the same ones keep circling around?
Because I feel like my brain gets stuck on things and then can’t move on. And I’m wondering how many others feel like that? And how to unstick and move on…
That questions I’ve already asked I keep wanting to re-ask because my brain won’t let them go. That all these ideas and thoughts that are in my head are the sames ones I’ve thought of, and the one or two that are new are put in there because of someone else.
That things I know aren’t true about what I can and can’t do, that I know have been put into me, won’t leave me.
And I feel stuck here.

I feel like I’m walking down a path I don’t want to walk down, but am because I’ve already walked down it. I know where it goes and I don’t want to go there, but my feet keep walking, and my thoughts keep thinking, in the same direction.

How do you stop the unwanted momentum, and direct it a direction you want? How do you unstick yourself from a place you don’t want to be stuck? And get a new thought-scenery in your mind?
Do you ever have that kind problem? How do you fix it?