I'm talking about silly harmless stuff like "I believed in Santa Claus till I was 13", and not deep existential stuff like "It took me till adulthood to realize that my parents were doing their best despite their their failings".

I'm curious to know what you think your own parents (or the people who raised you) did right. What actions, mindsets, or philosophies did they operate by that had a positive effect on you? What techniques of theirs would you use with your own children? What important lessons did they teach you?