I am going to try to post a link to buzzfeed re: 32 books that are life changing. "CAT'S CRADLE" by Kurt V. definitely had a most positive influence on my then 16 - 19 age era. I would not ever wish to have not discovered Vonnegut as early as I did. There are books in this list I have been meaning to read such as  Haddon's re: a disassociated mind. I have not even finished perusing this compendium and hope to put it here so that I may take my time. Well, here goes :
http://www.buzzfeed.com/erinlarosa/books-that-will-actually-change-your-life