What are the best books that changed your life and why?

well being a muslim Quran ee pak with translation is the best book,

while for professionaly  and socialy i will recommend you ROAD TO THE SUCCESS BY FAIZ SAYAL & ZAIVIYA BY ASHFAQ AHAMD  as per litreature concern in urdu  novels go with somw novels of UMERA AHMAD SHAHRE ZAT AND BANO QUDSIYA S BOOK

I am much inspired by Dale Carnegie's books. They have the power to influence people with the thought provoking real examples of life and the minds blowing philosophical narrations which can batter depict the real essence of life with a clear understanding...