
It applies to a lot more than just addiction. I keep coming back to this book and idea, Never Enough.

It's almost like watching one of those billionaire kids crying about their birthday party. But what any readers will learn soon, it isn't enough. For his time, he has everything anyone could want. He is the elite class, survives to adulthood, is good looking, has falcon like physical attributes. Siddhartha wins the jackpot in the birth lottery.

"In the shade of the house, in the sunshine of the riverbank near the boats, in the shade of the Sal-wood forest, in the shade of the fig tree is where Siddhartha grew up, the handsome son of the Brahmin, the young falcon, together with his friend Govinda, son of a Brahmin."

Here is the sentence ( ebook free, public domain): Positive connotation, but not too far off from a shadow or dark.
