> in increasing levels of potential difficulty Level 0 or 100 depending on the person: take your phone with you and just don't a) look at it every 5 minutes, b

> in increasing levels of potential difficulty Level 0 or 100 depending on the person: take your phone with you and just don't a) look at it every 5 minutes, b) reply to incoming messages instantly or c) check in to see what some pointless celebrity posted in the last 3 minutes.