I don't think there's anything to change. Not out there, at least, but in the patterns of how we ourselves use the internet. In what sites we visit. Stop using google (it returns nothing but ads and reddit), and don't use reddit, 4chan, let alone the so-called (anti)"social media". Use more sites like this, join a tildespace! Or build your site on neocities. Instead of having a facebook "wall", make your own little corner in the web, join a webring, make a few penpals over email, and come to the nice text-based javascriptless sites.
And most importantly -I can't stress this enough- get away from the computer. Move your body, take walks, build stuff, spend time with your friends, kids, your loved ones, idk. Come back to tell us how it's been. I think this is the most important thing to do.
I would keep reddit and 4chan and all those site just so that the people there stay there and don't come here.