I know things have changed from when he went in, this would have happened in the late 70's I think. What he says his therapist told him to do could be an episode or running gag in a sitcom, if they would let it on the air. (Now they would talk about it but back then words like that weren't used on the air.) Anyway, until HE realizes that all therapists aren't quacks and weirdos he's not going back. And since he's not going back he may never realize that. Part of his illness is that the world is out to get him, therapists especially.

Hard to use logic to battle that.