"Experience is not what happens to you. It is what you do with what happens to you."
To translate this to a more modern vernacular:
Everyone goes through sh#t in life, but smart people actually seem to learn from it.
While not claiming any measure of smarts myself, I do claim the ability the learn from my mistakes. Eventually. Although I will admit sometimes I seem to have a need to practice the mistakes a few times, just to make sure I get them "wrong".
Regardless, as my body has now made 49 complete revolutions around the sun, Huxley's point is indeed very well taken.