Dear my friend @cranium.leo , Are you a medical doctor?
When it comes to the ability to change, man has something to learn from nature. Lately, I communicate more and more often with people who are obsessed with a certain range of factors that cause them painful feelings (the negative side of the profession). It would seem that it is so easy to get out of this state, it is enough to simply switch your attention to any of the many other issues around us. Unfortunately, when a person has already fallen into the trap of "fixation", it becomes almost impossible for him to get out of this trap.
It's hard to understand your medical analysis, but I agree with the claim that "fixation" causes mental illness in humans.