Just speaking for myself, I've noticed that my habit is to eat what is in front of me, and clean my plate. I mean this both literally and figuratively.

If I have dessert in the house, like a bag of chocolate, then I eat one after dinner. If I don't have it in the house, then I just don't eat dessert.

If I have a social media feed full of content, then I'll scroll through all of it until there's nothing else that's new.

So what I've been doing is not entirely quitting Internet stuff, but instead I just massively unsubscribing, unfollowing, and filtering all the feeds. Sort of a Marie Kondo thing. I go through every subreddit I'm in, every RSS feed, every account I follow on Twitter, and i strongly consider "is this really providing lots of joy and/or value?" If not, it gets the chop.

I've cut out at least 2/3s of the stuff I was following since the peak, and it's only going down. Now when I doomscroll it's only for a few minutes. I hit the end of new content very very quickly. When that happens I start to look elsewhere. I've been reading a lot more actual books, done more chores, and been more productive overall.

As for the things I unfollowed? They clearly had no value because not only do I not miss them, I can barely even remember what they were.