At least nothing wisdom imparting.
Nah, if I could tell my younger self something, it'd probably be, "Pimples and zits don't magically disappear when you become an adult."
Yeah, that's my older self giving wisdom to my younger self. Maybe there is some wisdom in there. Problems don't magically fix themselves. Just like zits. I feel all buddah-ish now. Line up here and I'll dole out more sagely things. (Disclaimer: I will not be held responsible for you getting arrested because of something I said. =P)
PS: It's my birthday tomorrow and I get to celebrate by working all week. Oh joy.