I have found from my own experience that you need to shut your phone off and keep it off. It helps to keep it in a different room, especially at night before you go to sleep.

We're working on a service that allows you to do this while still being able to read the blogs and newsletters you like. I built this specifically to deal with this problem:

https://omreader.co

We're still in beta so it's free to use. I would love the feedback from any HN reader. You can email me at the email in my bio if you have any questions or feedback.