I got a chance to read 21 Dog Years last week by Mike Daisey which is a humorous story of life Amazon in the customer service and biz dev department during the boom. I loved this quote:

When you’re young, you think that you’ll live forever. Hey, check me out, I’m sixteen and I’m bullet-proof. This misconception generally fades around twenty-three, when you wake up in a Dumpster naked, covered in garbage, and you realize: Oh, I’m not immortal; Jaegermeister is my kryptonite.

I’d put it more at twenty but agree none the less.