A cool guide emotions people experience but struggle to articulate

Seems like these unexplainable emotions have pretty concise explanations.
- Yeah, I feel like you'd end up spending more time explaining what the hell "sonder" means than you would have by just explaining in your own words

humour presented unironically as a guide to one's own emotions.
- Welcome to coolguides. Half of the guides posted here are either useless, or pure bullshit

If I told my friends I pushed them away because of "Mauerbauertraurigkeit" they would Mauerbauertraurigkeit me.

There is an entire book called "A dictionary of obscure sorrows" by John Koenig, it's all from there

I thought I had "Mauerbauertraurigkeit" but then I realized Carl was just telling the same story, again.
- Definitely germanic. Google translate roughly figures it as "farmer wall sadness" which, I recognized sadness but not sure how the rest of that fits in. Something like a sadness that causes you to grow walls I guess.
  Anyway, I've heard of a couple of these, and I know that all words are made up, but these sound especially invented.
  
  Bauer in this case would be a verb. So "wall builder sadness".

OCR version:
Sonder: The realization that each passerby has a life as vivid and complex as your own.
Opia: The ambiguous intensity of looking someone in the eye, which can feel simultaneously invasive and vulnerable.
Monachopsis: The subtle but persistent feeling of being out of place.
Enouement: The bittersweetness of having arrived in the future, seeing how things turn out, but not being able to tell your past self.
Vellichor: The strange wistfulness of used bookshops.
Rubatosis: The unsettling awareness of your own heartbeat.
Kenopsia: The eerie, forlorn atmosphere of a place that is usually bustling with people but is now abandoned and quiet.
Mauerbauertraurigkeit: The inexplicable urge to push people away, even close friends who you really like.
Jouska: A hypothetical conversation that you compulsively play out in your head.
Chrysalism: The amniotic tranquility of being indoors during a thunderstorm.
Vemödalen: The frustration of photographing something amazing when thousands of identical photos already exist.
Anecdoche: A conversation in which everyone is talking, but nobody is listening.
Ellipsism: A sadness that you'll never be able to know how history will turn out.
Kuebiko: A state of exhaustion inspired by acts of senseless violence.
Lachesism: The desire to be struck by disaster - to survive a plane crash, or to lose everything in a fire.
Exulansis: The tendency to give up trying to talk about an experience because people are unable to relate to it.
Adronitis: Frustration with how long it takes to get to know someone.
Rückkehrunruhe: The feeling of returning home after an immersive trip only to find it fading rapidly from your awareness.
Nodus Tollens: The realization that the plot of your life doesn't make sense to you anymore.
Onism: The frustration of being stuck in just one body, that inhabits only one place at a time.
Liberosis: The desire to care less about things.
Altschmerz: Weariness with the same old issues that you've always had - the same boring flaws and anxieties that you've been gnawing on for years.
Occhiolism: The awareness of the smallness of your perspective.

Bauermauertraurigkeit sounds like someone's missing the Berlin wall.

Cool guide to plagiarising the Dictionary of Obscure Sorrows

Liberosis is quite common for me actually... I just can't-
- Not advice, but my experience with the same feeling began to ease when someone told me that being upset about, say wars overseas, was not itself helping anyone anywhere and was in fact harming me and those around me.
  Another nudge away from caring too much about too much came when I began making conscious efforts to care even more about things I had a part in or things I could control or do or say, which gratefully left less time and energy to care too much about the rest.

Amused that kenopsia describes what the Zeds call feeling liminal because of "liminal spaces / backrooms" memes.