I like the idea of the documentary as a portrait. There's not a chronological beginning, middle, and end structure. You build something in the editing room that's shaped by getting to know the person and digging deeper, unpeeling the layers of them as you get to know them.
I'm very focused when I'm making a movie, but I'm also a fantastic multitasker.
I have not given much credence to reviews of my films. Sometimes they're wrong, but it didn't matter to me.