Epictetus, the freed slave turned Stoic philosopher and teacher, said the following: Some things are within our power, while others are not. Within our power are opinion, motivation, desire, aversion, and, in a word, whatever is of our own doing; not within our power are our body, our property, reputation, office, and, in a word, whatever is not of our own doing. (Enchiridion 1) In episode 5 of the Stoicism On Fire podcast, I covered the practice of attention (prosoche),...