I turn 33 today. I can only hope that age brings wisdom.
We've been talking recently about the high-level frames and heuristics that organize other concepts. They're hard to transmit, and you have to rediscover them on your own, sometimes with the help of lots of different explanations and viewpoints (or one very good one). They're not obviously apparent when you're missing them; if you're not ready for them, they just sounds like platitudes and boring things you've already internalized.
Wisdom seems like the accumulation of those, or changes in higher-level heuristics you get once you've had enough of those. I look back on myself now vs. ten years ago and notice I've become more cynical, more mellow, and more prone to believing things are complicated. For example: