The "set Do Not Disturb for 12:00AM - 11:59PM" trick has been amazing for me the past month or so I started the experiment. I set it to allow texts and calls from my Favorites through (e.g. wife, mom, dad) -- but essentially every other type of notification is non-urgent and likely even non-important.

By far the best app to silence has been my email. I consider it a luxury that I can come home and not worry about it. I highly suggest it to anyone who thinks they have a screen addiction.