"I have found that people have an amazing ability to adapt and adapt quickly -- I guess it is what makes it possible for us to survive, but it can also work to our detriment. I believe our bodies want what is best for us, but sometimes a body forgets that what is best for us in the moment may not be the best for us over the long haul.
I first noticed this in March. I live in a town that is about 100 miles from the Fukushima Nuclear Plant. While my area was considered "safe" for radioactive fallout, the following days were littered with dozens of daily earthquakes day and night, no food or water to be found for miles, and no gasoline for those who wanted to go in search. After the 10th day of no more than 30 minutes of sleep a night, another Westerner and I decided to get a little distance.
After we drove about 200 miles, there were no more earthquakes, all the stores were open, it was calm and we were safe. Once my brain registered that I was safe, I had this strange feeling of my panic searching for something else to grasp onto ... I had become so accustomed to the fear and panic, that rather than it leaving when it was no longer necessary, it went looking for something else. I had to consciously tell myself there was nothing to fear and that it was OK to feel safe.
I see this in so many of the questions you get -- people are so used to feeling uneasy and unhappy, that even when things are OK, they seem to feel the need to make life fit into their adapted-to uneasiness and unhappiness. Sometimes it is OK to just allow ourselves to let it go, remember a time when life was lighter and allow yourself to go there."
My brain does this all the time. As soon as one fear passes, a new one jumps right into its place. And I'll find that if I'm not feeling anxiety, I'll scan around my brain looking for one. Interesting to think of it not as an OCD trait, but a human one.