is my embarrassment a brain glitch?

One thing that bothers me about myself is that I too frequently feel embarrassed about things that aren't even worthy of embarrassment. Like it's not uncommon for me to wake up feeling embarrassed by something I posted on my own facebook page the night before - and so I figure there must be a valid reason I woke up feeling embarrassed about it - but then when I read it, more often than not, it was just me expressing my own thoughts/feelings about something. So am I embarrassed by my own genuine thoughts/feelings? Am I embarrassed about semi-publicly expressing myself? Am I worried what other people might think? Or what?

I think I have a conflicted brain, because the genuine part of me is drawn towards expressing myself genuinely, regardless of what other people do or don't think. I've been like that for years. I'm pretty open to honestly expressing how I feel about things, but then I also question the validity and depth of the way I feel about things, even though they're my own feelings, so why am I questioning their validity. It's not like I'm stating my feelings as hardcore facts or something.

So for this morning's example, I woke up feeling embarrassed more than three hours before my alarm was set. I felt embarrassed that I had posted links to several old songs by This Mortal Coil (even though I liked the songs and that's why I posted them) and I felt embarrassed about this long-ish personal commentary that I placed above one of the songs. I felt embarrassed that I backtracked to 20+ years ago and I felt embarrassed about the age I am now. None of this embarrassment really makes sense. The worst thing I did was over-share my own thoughts and it's not as if anyone is being forced to read them, so what's the big deal? I'm tired of my brain waking up feeling embarrassed by me being an expressive individual.

Maybe this is part of the reason why I'm a writer. It feels important for me to openly, creatively express myself, but I'd rather do it on paper (or on the screen) rather than expressing myself in person and feeling semi-randomly embarrassed the next day. But even though my predominant form of creative expression is poetry and I enjoy writing poems and having them selected for publication, I often feel edgy and awkward and borderline embarrassed about being part of a public poetry reading, because then I have to read my words in front of people in person, which sometimes feels too presumptuous or assumptive, even though it's not.

Back to waking up hours before I was supposed to and feeling embarrassed about what I had posted on my own facebook page, I also had a headache when I woke up, so I didn't have the energy to re-read what I had written, in order to determine if it was truly worthy of embarrassment. I didn't delete my posts; I just changed their "Shared" status to where only I could see them. Am I turning into someone who only likes talking to myself? Well...no, because if that was the case then why would I be writing this and why would I take the time to submit my poems instead of just piling them up in boxes in my house? I don't like hiding things. I like sharing. Even if I feel semi-randomly embarrassed by parts of what I share. Sigh.
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I'm now adding one of my embarrassing feeling posts from yesterday because once I re-read it today, it really wasn't all that embarrassing - and even if it is, it's the way I sometimes feel anyway.

"Sometimes when your mind backtracks into your past, it feels weird thinking that your own interpretation of your past self might only exist in your own eyes and mind and not in anyone else's (except for their own interpretations, which might be significantly different from your own).

I'll bet I remember things about others that they don't remember about me - and I'll bet others remember things about me that I don't remember - maybe nobody remembers anything the same.

Significant others in my present that are still connected with their past in parts of present life, I wonder if they can imagine how it feels to mostly only be connected with your past significant others in dreams and your own minds (possibly convoluted) memories, because you don't have personal present contact with most of the individuals you used to be significantly involved with.

Maybe it's like that for a lot of people. I don't know. I mostly just know what it's like for me and what other people choose to share with me, from their interpretations."

https://www.youtube.com/watch?v=UjywQOuzeSY