Any tips for how to get efficient at content marketing?

I need to write a ton of articles. I know what to write about, not necessarily the structure. But I'm an engineer and perfectionist, so I feel held back by not knowing how to be efficient at doing it well, and easily lose focus.

What made you get into a good "flow" with your content marketing? Do you write a rough draft and then iterate on it? Get AI help to touch it up? Do you listen to music while doing it? Any tips appreciated.