|"these aren't the things you should focus on"|
What are these "things" that belong and don't belong "to man's portion"? To answer that question, we should turn to Epictetus, who says at the very beginning of the Enchiridion:
Some things are up to us and some are not up to us. Our opinions are up to us, and our impulses, desires, aversions—in short, whatever is our own doing. Our bodies are not up to us, nor are our possessions, our reputations, or our public offices, or, that is, whatever is not our own doing. The things that are up to us are by nature free, unhindered, and unimpeded; the things that are not up to us are weak, enslaved, hindered, not our own.To rephrase Marcus, one should 'pay no attention' to our bodies, possessions, our reputations, our public offices and anything not of our own doing. Man was not created for his body, possessions, reputation or for public office - these are not the end or purpose of man. What we should focus on are things in our control - our impulses, desires, aversions and our opinions.
Lastly, let me comment on paying no attention to our bodies, possessions and reputations. Some might ask in shock, "so I should not care about my body?!" There is a nuance to understanding this. Would you agree that you have little to no control over whether you get cancer or not? You could live an entirely healthy, fit life and still have a stroke and die (like my son's soccer coach). Indeed you can control how you eat and exercise and sleep, but ultimately you don't have full control over your body. The same reasoning can be applied to possessions and reputations.