I try to take a weekly digital Sabbath, batch my emails so I deal with them a few times a day rather than constantly, and increasingly give myself permission to ignore unsolicited communiques. I try, too, to give others more slack. The respond-now culture is a two-way street. I'm trying to be more mindful of that.
I begin early in the morning and edit everything I wrote the previous day. I write until mid-afternoon. My goal is to write a chapter per week, and if I am not finished by Friday, I write on the weekend. I get a lot of fan emails and answer them every day. In the late afternoon, I attend to the business of publishing, etc.