One of the best books I've ever read is actually a factual study book. It's called glädjerapporten in Swedish (transl. happiness report) written by Bosse Angelöw.
I read this book because the media have such a dark view of the world and only report bad news. However the world should be focusing on how to make the world a better place and what could possibly be more inspiring than great news?
So this book is a book about GOOD news in the world. I got happier and happier for every page i read. It's a lot of statistics about less murders, better education, better hygiene and how the life is getting better for many people in the world. Less poverty. It also contain inspirational stories about people going out in the world to do charity, vaccinate children, helping at orphanages and more.
Everything in this book is based on fact, and the world is getting better even if the media likes to make us believe different.
I don't think this book has been translated, unfortunately, but if you know Swedish you should read it, totally.