I have been an overanalyzer all of my life. If someone is just joking around with me, for instance:
We were eating in a restuarant, and a guy friend jokingly says, "Jeeze, you sure are eating a lot, you're going to get fatter..." He was being completely sarcastic, now that I look back on it, but I overanalyzed what he said. I'm not even overweight, but the only thing I was thinking of was what compulsive thought caused him to say that. Even 30 minutes after leaving the restuarant, I was still fuming inside and constantly pondering it, thinking, why would he say that?
Being an analytical person is a burden let me tell you...I have over thought things to the point of having panic attacks. It seems that I can't take a joke, or someone playfully teasing me. You don't know how many times I've lost a potential date when a guy is playfully joking around with me and I over-think it and take it too seriously and actually adopt a frown on my face for the rest of the night. I even have had major troubles with sleeping because I could not turn my mind off at night.
The only thing I can say is to adopt a different state of mind. Meditate, while thinking about a piece of white paper. Just clear your mind, and think about NOTHING. It will be difficult at first, but you could even play some relaxing music while your doing this. Then when someone says something that you may over analyze, you can just go to your happy place. It's helped me, I'm also prescribed to valium now and that helps too.