It's easier to see the mistake on someone else's paper.
If you want to zoom down the expert slope tomorrow, you have to fall down the bunny slope today.
It doesn't count if your swing is going the highest if you're getting pushed.
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.
The teacher can always tell when you did your homework on the bus.
If you want to see a shooting star, you might have to spend a lot of nights looking up.