Answer:
First principles:
Psychoanalysis is a theory of mind that sees human subjectivity as rooted in three elements: the body, social/familial structures and language. All the theories of psychoanalysis put these into different configurations and see the ways that the theory can be used in differently configured ways.
the human mind functions as much unconsciously as consciously;
everything is an utterance and no utterance is innocent;
utterances are always motivated by forms of desire.