The books that have had the biggest impact on the way I view the world and my own writing style are:

1. To Kill a Mockingbird by Harper Lee

2. Brave New World by Aldous Huxley

3. The Painted Veil by W. Soumerset Maugham

4. Testament of Youth by Vera Brittan

5. Awakenings by Oliver Sacks

6. Death of a Salesman by Arthur Miller (technically a play, but whatever)

7. Leaves of Grass by Walt Whitman (specifically "Song of Myself")

8. War is a Force that Gives Us Meaning by Chris Hedges

9. Chrónica de una muerte anunciada by Gabriel García Márquez

Hope that helps!

CORAN ^^

The Alchemist, by Paulo Coelho.  Definitely.

Historical fiction books.

"The Bad girl"- Mario Vargas Llosa and "The Kite Runner"- Khaled Hosseini