“Positive” thinking is the mistrust of reality acceptance, suspecting some “evil out there who has to be ignored”. The more reality gets divided into good/bad dualism, and “the dirt” broomed under the carpet where he rotten unloved to poisonous “danger waste”, the more a delusion of superficial “well functioning” has to be kept up at each  price.

Positivism is hidden negativism.

Reality is NOT exclusive and does not polarise.