The full quote is I am not a self-help writer. I am a self-problem writer. When people read my books, I provoke some things. I cannot justify my work. I do my work; it is up to them to classify it, to judge.
So he is writing about his own problems and how he resolves them; rather than telling others how to resolve their problems. It allows Coelho to easily reach his readers.<span />
Well behaviors are completely "involuntary" and reflect people's true states. Most people will only attempt to control their nonverbal behavior when they are lying.
