Again, its all a little vague and hard to answer...but psychotic thinking means what you believe to be true is not true, as judged by a large number of well functioning and well meaning other people. Its not a matter of difference of opinion.
In almost all cases, its better to continue the Risperdal, and to keep on investigating, with a professional, the degree and kind of thinking that may be holding your life back, and giving you so many doubts about your sanity.
I think your thoughts become psychotic when you begin to take steps to carry the thought out or actually act on the thought. I know what you mean...I have "thoughts" that bother me alot. My doctor told me that people who have intrusive thoughts like this usually dont act on them. I wouldnt worry about it if I was you, unless you really think you will carry your thought out. Zoloft has really helped me with this. If you would like to share your thought with me privately my email is ***@**** .