Idk, it just hit me one day.
See I used to switch my phone off and put it away in a drawer, (part of opposite action) but it just wasn't enough, it didn't help calm me down... I still had this raging impulse to get something out of my system.
So I got a lil pink diary, renamed it, and it just took off from there, I don't even have to switch my phone off anymore, putting it down and going to do something else, works well enough now.