lemmy.ml is a lemmy instance run by the developers of lemmy. lemmy.ml is federated with hexbear, so you can read their posts and we can read your posts.
Paying attention to my breathing has sometimes worked (though not always) (not changing it, but feeling how your chest goes up and down and hearing the air rushing in and out and maybe even picturing the rhythm in your head). It distracts me from other thoughts and calms me down.
If that doesn’t work, I try to distract myself with an interesting fiction book. That normally brings my head to less adrenaline-inducing thoughts (since now when trying to fall asleep I will be more focused on who the murderer of the dead child could be, or why the Zogophonts abandoned that resource-rich planet)
I use SearXNG. It is a meta search engine so it use results from various other search engines and you can specify which with !. It does the job for me.
a shovel produces the same amount of use-value whether it is sold for $5 or $25
Not disagreeing with anything you said, but use-value is a qualitative property of a commodity, not quantitative, so we can’t speak of an “amount of use-value”, AFAIK.