Enders Game
You should read Enders Game
Best selling book of the year
Its characters are more realistic than most in the young adult section, the writing is precise, and the vivid details make you want to keep reading.
Have you ever been put to the test to prove yourself to the entire world around you?
The biggest part of this book is that it teaches what it means to be human, not by comparing the humans against the invading alien species, "The Buggers", but by analyzing the mind of Ender.