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 doesn't count if your swing is going the highest if you're getting pushed.
You'll have a lot more respect for a bird after you try making a nest.
Every time you swim out to the rock, it gets a little closer.
If you want to zoom down the expert slope tomorrow, you have to fall down the bunny slope today.
The path you're on looks different when you turn around.