The exact opposite of pronoia, paranoia is the belief that other people are always out to get you. While I am not saying there cannot be truth in this, my life has taught me that the opposite is more abundant at least for me. Does that mean that the Law of Attraction actually works?
This depends of course on whether you are pronoid or paranoid. To me, that is largely coinciding with optimism and pessimism, although these are more like temporary emotions.