Luis would need to tolerate the anxiety of not addressing his email during those few hours, so we came up with some tactics: Listening to calming music, going on a walk, and repeating to himself: *I have the power to choose my routine*.
I could see his brain rewiring in real time: He no longer believed that his clients hired him because he was always available. He was starting to see that it was safe to wait a bit before responding. It was even safe, in some cases, to not respond to emails at all.