The most essential skill of a CEO (and a human being, I guess) is prioritization. Knowing what to focus on, why, for how long, and at the expense of what is so crucial that it sometimes blows my mind.
There’s a great book about this called the effective executive. It’s old but keeps seemingly getting more relevant
"imagine your company office is constantly on fire, you can't put out all fires at the same time and there are new fires daily; your job as a ceo is to chose what fires to put out and what to let burn" heard in one of the books, can't remember which one