Hi Goofy,
I understand completely. Overanalyzing is one of my specialties, not that I want it to be. Being analytical has served me well in a number of ways. Being over analytical has never served me well. The key for me is to make an effort to stop myself before I overanalyze.
If I have a problem, like at work, I concentrate on my role. Identify what is within my control and what is not. I then analyze what was within my control. (Do I need to change something?, own a mistake?, apologize?, did I do my best?) That which is not within my control still bothers me and to avoid over analyzing I try to identify the possibilites of "why", but when I see that the issue is someone else's I am trying to leave it there and only deal with my responsibility. Note I said TRY. Not great at it and like everything else it takes time and practice. The only thing I have learned is that the only way to affect a situation is to affect me and my responses, but remaining true to who I am and my ethics. I can't change anyone or anything else, just me. If I conclude that I haven't caused the problem, and this is harder sometimes, I must remain true to my conclusion. This is also hard b/c I accept blame easily. You probably do too, otherwise you wouldn't spend do much time on an issue and have it affect you so profoundly. You and I feel like we MUST fix it. This is why we need to only own what belongs to us and let the other stuff go.
Josie is right keeping a journal is extremely helpful and can be helpful in letting you identify your overanalysis vs your
necessary analysis. It will let you own your issues and pass what belongs to others to them, thus releasing you from trying to control what you cannot.
Good luck with your work issue. They're the pits, but I'm confident you'll be able to "get your head around it" and prevail!! I'm in your corner, let me know how it goes!