Developing self awareness....is a strange magical boot strapping process....some people never quite get to that level.
I am not real sure why....maybe their self image is too fragile to take self examination? or they need order so much they can't change.....but some people would rather die or fight the whole world than admit they need to improve on something.
I don't know if there is any tried and true way to pull someone over the self awareness gap. My father a minister tried to help people that way endlessly, usually it fails at a certain point. I do not know if the people ever figured it out later on in life....sorry!
It is nice to try to help people but 99% of the time what you see is what you get....it is nice when you do see one of those 1%-ers bloom like a rose, I have seen it a few times.