What if someone threw you something?

Sorry, I can't tell if you're being sarcastic or not.

But obviously the quote's saying that if you're handed everything it means nothing. But if you lose it and have to fight to regain it, you learn its true value.

No, that's not what it's saying. What it's saying is "all the cool kids sound zen, so here's my shot".

BTW - Folks who earned "it" in the first place know something about value too. There are identities other than the lost princess....

ah, like the prodigal son.

(I used to wonder if "prodigal" was a biblical term; but it's just related to the word "prodigious". However, I don't know which came first.)

Well, it's a biblical reference. 'Roast the fatted calf when the prodigal son returns.' At least, that's what Ringo and Weber's "We Few" claims... ah, I love me my MilSciFic :)

Then you can't catch it.

Sounds like something from the Tao.