Final answer:
According to Sacks, we constantly work on doing ordinary things and developing virtues through just and temperate acts. This promotes self-improvement and leads to a good life.
Step-by-step explanation:
In the given texts, there are references to the importance of taking action and constantly working on oneself. This relates to the concept of self-improvement and personal growth. Sacks emphasizes that we should focus on doing ordinary things, rather than striving to be extraordinary. By engaging in just and temperate acts, we can develop virtues and lead a good life.