Allow me to riff on a way to read your comment you may not have intended and apply it tentatively, only to myself, and then, if you agree, perhaps to any who have such awareness:
Yes, I am well versed on the subject of ego because, for reasons about which here I think irrelevant to speculate, I had the massive arrogance of ego to wish not to have one, and in the process of trying to rid myself of it became rather well acquainted with all manner of ways to conceal it from that piteously tortured pursuit.
In short I know, or may just be egotistically affirming, that I know a lot about egotism because I have lots of experience with a bad case of it.
So my sense of it is that anyone can know all there is to know about the ego if they know themselves, and the more that you know the less satisfied you will be having one. And the less satisfied you become the more aware you will be that it is ego itself that is the source of that feeling of need.
Catch 22: The ego is a prison created by and composed of an invisible need to be other than what we are, a self that persists in imagination only and only plays tricks on itself. There is no exit but the one in the direction we least want to look.
So, ch33zw1z, thank you for the complement I think you actually intended for me and another, but know that as far as I an concerned, your complement could only arise from a person with a similar urge to be free of the falseness and destructiveness of the self I call narcissistic ego. You could not do that without yourself knowing something about ego.