For me, work from home didn't really change the hardest things about shutting down. It has never been (again, for me) the equipment or the emails or the messages, but that the mind doesn't stop chewing on things. I can put away the computers and go for a walk and still have my mind working over whatever problems I was trying to solve. I think it's an example of the mind working against itself, because I enjoy solving problems but I also enjoy putting work aside after hours.