For a while now I've been telling my teams to think about work-life integration, not balance. I'm okay taking calls after normal working hours - maybe not so much at 2A, and if it's not an emergency I can ask for a call-back after dinner. I used to scan work emails on vacation while my spouse was in the shower - that way I wouldn't have a thousand to deal with on my return and it wasn't a burden on my spouse and I. It's all about setting up rules that work for you and your business so you can be comfortable.