I think it is a little different if you have your own business and anything you do/work directly benefits you. But it's good to hear that you keep it reined in to a certain amount of time per day AND that you go on vacation. I heard from other business owners who do not which I believe is bad for everyone. We all need to recharge somehow.
I guess part of my personal problem is that I am too invested into my job for my own good. But it's hard for me to dial back because that's just not how I tick. Or have ticked all my life.