I’m getting a lot out of Mill’s autobiography. From the end of chapter 3, wise advice:
I learnt how to obtain the best I could, when I could not obtain everything; instead of being indignant or dispirited because I could not have entirely my own way, to be pleased and encouraged when I could have the smallest part of it; and when even that could not be, to bear with complete equanimity the being overruled altogether. I have found, through life, these acquisitions to be of the greatest possible importance for personal happiness, and they are also a very necessary condition for enabling any one, either as theorist or as practical man, to effect the greatest amount of good compatible with his opportunities.
And near the end of chapter 4 Mill details the casual self-improvement programs he and some friends conducted, mostly as a sort of intense book club. They studied languages, read and discussed serious works, and debated issues. Where are such groups today?