For me it was taking a very long and very hard look at all the different notifications I was getting, and then cutting them down as much as possible. It sounds

For me it was taking a very long and very hard look at all the different notifications I was getting, and then cutting them down as much as possible. It sounds like a minor thing to do, but in effect I became more focused, as I spend almost no mental energy on useless distractions. I have only so much mental juice per day to begin with, and not wasting it on unimportant notices allows me to allocate more of it on stuff that actually matters.