My own situation is similar to that. My brain never stops and I cannot always determine its processes. I have many unanswered questions and many possible projections (typically negative) in relation to those, and there are times I cannot find a base or reference point for trying to sort them all out. I put a lot of effort into keeping an emotions-free, factual reality within view so I can have a "home base" for day-to-day function, and I also work hard at not fretting over things I can actually do nothing about.