You take your phone out of your pocket, probably not thinking about even doing so, look at it and immediately feel miserable – but there you'll stay, scrolling and scrolling, more and more miserable. Just a few minutes later you'll probably put it away and then do it all over again. And you'll repeat that cycle, every few minutes, over and over until you go to sleep – a sleep probably disturbed by the fact that you feel compelled to look at your phone when you wake up from it.