It’s the quality and and value of the content of the books some are to be swallowed and tasted
The early bird gets the worm wherever you go
Answer:
I personally am upset because, as a human, I'm never entirely satisfied with what I have, or at least not for a long period of time. I will always yearn for the things I don't have or can't experience. But looking at what I do have and how much worse things used to be, or can be, helps take everything into perspective.
Explanation:
This response is based off of my personal experience in life