Do you mind sharing which book, and how? I view it as you pick up parts of the books you read. Hopefully they makes you smart, more knowledgable, makes you think, view the world a little differently, but the person who puts the book down is still you.

By significant I mean would the people around you see a different person after you read the book.

Don't you bring up an example of how a book can change your life in your question. If a book makes you view the world differently (even by a little) doesn't that change your outlook on life?

As a personal example a book/novel (how to live on 24 hours a day) made me change how I view my day, shifting from a work day focus (the day is finished when work is finished) to looking at the waking time outside of work as the focus for my day.

This is something noticeable both to me and my surrounding since it gave me a lot more time to do things for personal enjoyment or to help others every day.

And no it didn't change the world but it made a profound impact on my life by implementing a tiny change in how I view the world