There is nothing wrong with letting your hopes get a bit high right now, so go ahead and reach for the stars! Your positive thinking has made things happen in the past, so why would you doubt that they could ever work again? As long as you don't sign any legal documents, make any big commitments, or invest any money in something that isn't fully fleshed out yet, there is nothing wrong with keeping yourself in a hopeful state. At the very least, it will keep you in a good mood.