Share 'What Book Had the Biggest Impact on you?'

I often wonder which book really affected me the most. Whether it was the one that interested me in writing, the one that got me reading, or the one that inspired me to keep moving forward in life- books have such a unique place in each persons life.   So I pose the question:   Which book had the greatest impact on you?     Kelli http://www.ekfamilybooks.blogspot.com