Positive thinking always leaves an option open for the negative or things to come through not the way your would really love them to. The oppertunity for bad feelings come up and things you would not like to happen to take place. Being positive is just that, 'being positive'. However that won't make any difference wether other things than what you would like to happen, can happen or not. At least form the perspective of your self.
Perfect thinking however doesn't have any, I repeat ANY, spot open for things to be thought you do not want them to happen. Perfect thinking is perfect and will eventually bring forward perfect experiences. Moments when you just enjoy the moment and can't hold back but have to say "this is perfect". The moments we all long for. These moments can only take place after perfect thinking was practiced in the very first place. That is a fact! You can think about it as much as you want, but these perfect moments in your life come only after you have been able to visualize them before. Not any other way.
Like Michael Jordan visualized the perfect win of a championship a thousand times or Michael Jackson went through his concert in his head perfectly a thousand times before he was able to deliver the perfect show. This was only possible through perfect thinking, not positive thinking.
Feeling bad abot a situation? Think about how it would resolve perfectly and I mean perfectly not just good or positve. You will feel just better.