I don’t think that positive thinking can destroy the economy. Then again it depends on what you consider positive thinking. If you think that terrorism is positive then that would destroy the economy and a lot of things. However, it you think that you should never give up, then that could help the economy. For example, some people think that working for what you want in life would make you happy, and that could very well help the economy. Working for a store, a church, or helping out the community, that would help the economy, not destroy it. So positive thinking does not always result in destroying the economy. Positive thinking can get you a lot of places. 🙂