Good post. There is a certain irony in the need to disconnect in order to re-connect with family, literature etc.
There is something to be said for nightly disconnect as well (or at least limiting it to small chunks of time).
Email is a perfect example if we reply to emails 24 hours people start to expect it, and worse still we are modeling poor work life balance to our staff. Some of the best advice I ever read on that was that if you can’t resist the urge to reply to emails 24 hours at least save them as drafts and send them during work hours.