I closed my Facebook and Twitter accounts about a month ago for similar reasons: it's not only I want my attention back, it's that users of these systems have become their de-facto free workers (providing eyes for advertisers and becoming live human bait to lure more eyes --your friends-- in a never-ending, never-fully-satisfied loop). I haven't suffered from cold turkey. Everything seems a bit slower now, and that's good.

A tangential thought: I hate reading stuff on Medium specially because they need to feed me what other people found interesting about the article ("top highlight!") instead of letting me do the job.