How Do You Know What's Most Important?

Having an indefinite end time to the work day is kind of giving yourself permission to not be as intensely focused on your work while you're doing it. Having the deadline gives you that energy and intensity to really engage each hour of work to really make it count. And then the last part is to start making progress on the most important things that you have the highest priority. How do you know what's the most important thing? I my sense is that you kind of know.