Thank you everyone who replied!

Reading your responses helped a lot. I don't mind the diagnosis, but it does feel unfair sometimes that I was made to take meds for 3 years and think that I was "ill" when others who are way worse than I ever was are walking around firmly believing that they are just fine, and that the angry fits, inappropriate behavior etc. they exhibit are other people's fault.

I work with a person who I believe is suffering from low grade paranoid delusions and he is turning the lives of our coworkers and my own into a nightmare because of the constant insecurity with which he is coping by scheming and undermining others to make his over shortcoming look better in comparison. I really feel that he is suffering daily and would benefit a lot from at least therapy, but I know that he would never accept it.

What do I do, other than update my resume? That is the question.