Great introduction to Stoic philosophy. The 'Stoic way of life' is something to strive towards, because it is incredibly difficult to achieve that level of control over one's mind. Here are few things that I took away from the book:
1. Distinguish things under your control vs not: Whenever faced with a situation, ask yourself whether it is/was under your control or not. If it wasn't, do not dwell over it. (critical lens: If the principal question of stoic Philosophy is weather something is in our control or not, I think it's in reality hard to distinguish between how much of an incident is a consequence of some choice that was under our control and what was not.)
2. Do not depend on others for your own freedom and tranquility of mind. It does not mean you won't reach out to others for help if you need so, but regardless of how the other person reacts, if you have made the reasonable choices, the rest is not up to you and you shouldn't feel positively/negatively about it. As Epictetus writes: "If someone in the street were entrusted with your body, you would be furious. Yet you entrust your mind to anyone around who happens to insult you, and allow it to be troubled and confused. Aren't you ashamed of that?"
3. Always remind yourself, we are mortal beings and eventually we all will die. Then, "you will never have any mean thought or be too keen on anything" because everything is impermanent.
4. Whenever someone provokes you, be aware that the provocation really comes from your own judgement. Start, then by trying not to get carried away by the impression. Once you pause and give yourself time, you will more easily control yourself.
5. Acknowledge the role of randomness and luck. "You can always win if you only enter competitions where winning is up to you".
6. Never judge another person from outward impressions. There are wealthy and/or powerful people who are unhappy. Hence, wealth or power should not be your goal if you want a free mind.
7. It is better to starve to death in a calm and confident state of mind than to live anxiously amidst abundance.
8. "Uneducated people blame others when they are doing badly. Those whose education is underway blame themselves. But a fully educated person blames no one, neither himself nor anyone else."
9. "If you are told that someone is talking badly of you, don't defend yourself against the story but reply "obviously he didn't know my other faults, or he would have mentioned them as well."
10. Treat things that are given to you (wealth, honor, power, family, friendships, health) like travelers treat their lodging; you don't own or control them, but take care of them when you have them. If you lose them, don't be sad because they have only been returned, you didn't 'lose' them because they were never yours.
11. Don't ask for things to happen as you liked them to, but wish them to happen as they actually do, and you will be alright.
12. Don't be carried away with first impressions. In all circumstances, keep in mind to turn in to yourself and ask what resources you have for dealing with these things. "If you see a good looking man or woman, you will find self-control the appropriate power; if pain afflicts you, you will find endurance; if rudeness, you will find patience. By developing these habits, you will not be carried away by your first impressions."
13. “These inferences are invalid: “I am richer than you, therefore I am better than you,” and “I am more eloquent than you, therefore I am better than you.” But the following inferences are more cogent: “I am richer than you, therefore my property is better than yours,” or “I am more eloquent than you, therefore my diction is better than yours.” But you yourself are neither property nor diction.”