hello friend, I just read carefully what you wrote and I congratulate you, I work in the area of ​​psychology and I know about the subject, there are some things that would be good to write, for example: what is obsession and what is compulsion? what is to be handled from a psychological point of view.
I congratulate you for recommending a specialist.
not only obsection and compulsion are treated with cognitive methods, all psychological currents have their techniques to treat them.
Congratulations..!