Some great thoughts here Jason.

The only thing I would add is scheduled Do Not Disturb. Be sure to add most important contacts to favourites (to ensure their messages/calls come through) and set a time schedule to remove all pings.

Mine is from 8pm-12pm to minimise distraction time closer to bed and a quiet thought-provoking morning.

Thank you for the tip on Superhuman as well – I just signed up!