Getting lost teaches you how to read a map.
You can teach an old dog new tricks with the right kind of doggie treats.
Nobody can pedal the bike for you.
It feels a lot colder when you're shoveling snow than when you're building a snow fort.
You don't get to decide your part in the school play, but you do get to decide whether or not you play it well.
It's easier to knock on a door that's not shut all the way.