My students often say, "My roommate read this story and really liked it", and it's hard to convince them that there are things wrong with it. I say, "well, people who love you want you to be happy. But I'm your professor and I'm supposed to be teaching you something."
I am not conscious of working especially hard, or of 'working' at all. Writing and teaching have always been, for me, so richly rewarding that I don't think of them as work in the usual sense of the word.
I don't teach literature from my perspective as 'Joyce Carol Oates.' I try to teach fiction from the perspective of each writer. If I'm teaching a story by Hemingway, my endeavor is to present the story that Hemingway wrote in its fullest realization.