Getting lost teaches you how to read a map.
It's not enough to be able to spell "magnificence" in your bedroom. You have to be able to spell it at the microphone during the spelling bee.
It's more fun to color outside the lines.
If you keep missing, get closer to the basket.
If the horse you're drawing looks more like a dog, make it a dog.
Hitting the kid with the ball might get you the ball, but it won't get you anyone to throw it to.