Still, the willingness to share of oneself, from the heart, even when nothing comes back... that bespeaks a level of comfort with oneself, a level of self-acceptance, that I admire.

Hm. I see your general point, but my mileage varies on the specifics: I don't see a lot of correlation, positive or negative, between people who discuss their negative feelings ("innermost doubts") a lot and people who seem comfortable with themselves - although it makes sense that they'd be connected for some people.

They're not all that connected for me because self-acceptance for me is deeply entwined with acceptance in general. And when I'm in an acceptance frame of mind, I don't really have doubts, and I don't perceive myself as deeply "layered" with an "inner" and an "outer" part.

(Needless to say, this is not a permanent condition! It's something that I get to at times.)