So true. And ending at 3pm sounds like you’ve struck the perfect balance between family and work.

I’ve found that email has the most psychological impact on my “working time”. I don’t do email after 6pm, and I don’t do email on weekends. I might read something in the evening or on the weekend, but I’m not allowed to reply to it. The act of sticking to this for a few years has meant that after 6pm, or on weekends, something in my brain just switches to my “not working” mode. It’s amazing how much routine can have an effect on your working practices.