i really enjoyed the Fountainhead by Ayn Rand although people find her ideas of selfishness freakin' debatable, however i don't have much thought on that issue. just, im pretty much head over heels for Howard Roark. and even some love for his lover
Anything by Chuck Palahniuk (ex: Fight Club, Choke), although his books are on the mature side.
Check out the Game of Thrones series too, by George R.R. Martin.
My default recommendations, though, are:
Go Ask Alice
Catcher In The Rye
Perks Of Being A Wallflower
i loved game of thrones btw
ive started clash of kings now, so excited for it
liked go ask alice & perks too when i read it years ago as a younger teen
loved the hobbit and the other books tooooooo
would like to read catcher in the rye sometime!