His approach is on the one hand to focus on other rewarding offline activities that are creative or which help grow deep in-person relationships. And on the other hand, to engage with technology in specific ways when that usage is justified by being the best way to solve a particular need.
For an example of the latter, one suggested practise is to always keep your phone on do-not-disturb (except for certain important contacts who may genuinely need to phone you in an emergency) and then to triage any notifications only at specific limited times of the day. Avoid the buzzes and pings, but carry on conversations when you aren't trying to focus on something else.