Drawing on faded impressions of Freudian theory, I associate the Ego with self (self as ego)-preservation, self-containment, (an illusion of) mastery, and individuality attained by objectification (knowledge rather than the verb). Ego is the basis of identity as something to be defended, kept completed. My image association for "Ego" is a globe of hard plastic.

(Still using faded impressions...) It's also subject to the superego, the "critic," which is what I initially would have thought was the source of the judgments (shallow, boring), but that's an easier insight than Toby's, that it's the ego itself that makes regular Writes difficult.

It's as though Something is trying to convince me it's/I'm boring, perhaps out of that something's fear of being challenged by an alliance that occurs during PW (?). For me a Write often bears the marks of that whole struggle, I think. I'm rarely "tapped in" from the beginning of a Write. The notion of my mind as an ally could be a powerful counterforce.