Happy: Why more or less everything is absolutely fine

Full of gems for anyone, a bit boring at times though. I liked that it summarised nicely many books I have read long ago, so it was good refresher. One of the books that definitely leaves you with some food for thought. In my case, it was the thought experiment, where if a god would make me live this life again and again endlessly, without the ability of changing a thing, would I think of it as a blessing or a curse?