The sharing of meaning between two positions of thought within a person is called

The sharing of meaning between two positions of thought within a single person is called intra-personal communication.

It is the internal dialogue by which a person reflects, weighs alternatives, reasons with the self and forms judgements before or without any outward exchange.

This self-talk takes place entirely inside the individual, between differing viewpoints held in the same mind.

Selfish communication is not a technical term and does not name any recognised category of communication.

Inter-personal communication is wrong here, since it occurs between two or more different people, not within one person.

Spiritual communication concerns a sense of connection with the transcendent and does not describe the inner exchange between one's own positions of thought.