Like most commenters here, I've found a happy medium (when I activate it). I'm no good at cold turkey and being without this amazing device is just impractical, but airplaning the phone routinely throughout the day really helps to cut down on "notification checking" and that constant background mental polling that this article talks about. I still like to have music (audiobooks actually) and navigation on hand, but knowing I have no notifications and knowing that there is just a tiny bit of effort involved in getting them seems to be my effective compromise.