What's the smartest or most insightful thing you figured out as a kid that stays with you today?

When I was a kid I heard people talking about how kids learn better than adults.

So I realized that the "way a kid's brain works" is probably correlated with "the way it feels to be conscious as a kid" so I used my autistic super-memory to save a snapshot of the feeling of consciousness itself.

Then I instructed my brain to keep track of that, and never lose it.

Now I'm in my 40s, and I can still learn like a little kid.