Fixed-schedule productivity, in other words, is a meta-habit that’s simple to adopt but broad in its impact. If you have to choose just one behavior that reorients your focus toward the deep, this one should be high on your list of possibilities.
I don't actually buy that this habit causes increased deep work. I think he's prone to be shoe-horning in his ideas, like a Reddit "Hi I'm Cal Newport and this is how i work", into the frame of promoting this one metric (how much of a deep work habit you can make) that he built a book around
