Know any good self-help books published before 1700 ? :)
The Book of Proverbs? The Book of Baruch? Sermons from the past? Writings of the ancient Stoics?
+1 for stoics, actually people like Nassim Taleb are re-inventing that and it seems to be a good way.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.