An excerpt from "Suffering is Optional" by Byron Katie [more]
http://www.odemagazine.com/doc/51/suffering-is-optional/

"What I came to see was that my suffering wasn't a result of not having control; it was a result of arguing with reality. I discovered that when I believed my thoughts, I suffered, but that when I didn't believe them, I didn't suffer, and that this is true for every human being."