The advice was to write a note to yourself to reflect and then set that note as you lock screen (I won't repeat it verbatim, read the article). That way, whenever you look at your phone to unlock it you are reminded.

I'm still a password to unlock guy but I worry that the FaceID face scan to unlock crowd are the ones who might need the advice to unplug, the most, and also miss the benefit of this tip.

Personally I am very careful to disable basically all non essential notifications from apps, who if you let them, will constantly ping you for attention.

Try it now: go to your phone settings -> notifications and see what is turned on, they are all ON by default, switch the unimportant ones OFF.