A true critic ought to dwell upon excellencies rather than imperfections, to discover the concealed beauties of a writer, and communicate to the world such things as are worth their observation.
I think if you do something and it turns out pretty good, then you should go do something else wonderful, not dwell on it for too long. Just figure out what's next.
The Lord showed me, so that I did see clearly, that he did not dwell in these temples which men had commanded and set up, but in people's hearts... his people were his temple, and he dwelt in them.
Fiction is able to encompass books that are bleak and which dwell on the manifold and terrible problems of our times. But I don't think that all books need to have that particular focus.
I have a personality that tends to be somewhat compulsive, and I do tend to think in a circular way. I dwell on the same things over and over and I try to figure out different ways of looking at the same issue.