I have no doubt that someone reading this ( and certainly, I , at 4 decades on this planet am in that club) badly needs to follow this line of thinking...
Yes I needed this. Setting boundaries enables you to do better. Too many times my work has been substandard because I've taken on too much. Saying no is hard for me but the alternative is often letting people down when I'm not able to complete on time.
There is a thrill to completing urgent last minute tasks but often it's just me bailing someone out who should have been more organized.
Medicine, ideally surgery. I have zero knowledge of it and stand in awe of what I see high end doctors achieve. This isn't even a humanitarian "help my fellow man" thing. It just seems amazing.
Same here, though in my case i assume it's mock (hopefully?) insult in a few Indian Telegram groups where I'm the oldest member by about 2 decades. "Unkill" is the phrasing and "boomer" is most assuredly the implication.
I ended up with the same approach. I used to do my idle browsing on both, the PC and the phone. In an earlier bout of productivity (many moons ago) I blocked all the usual suspects on my PC. That was several years (and PCs) ago - but there's now never an inclination to hop over to those sites on the PC and the "missing out" feeling isn't there since I can check 'em on the phone (later). For whatever reason, it feels more like goofing off when I'm on the phone, so there's a slight aversion to doing that during the regular day.