Conscious of one's acts or state as belonging to, or originating in, one's self.

Conscious of one's self as an object of the observation of others; as, the speaker was too self-conscious.

Conscious of oneself as possessor of mental states and originator of actions; aware of oneself as an individual.

aware of yourself as an individual or of your own being and actions and thoughts; "self-conscious awareness"; "self-conscious about their roles as guardians of the social values"- D.M.Potter

excessively and uncomfortably conscious of your appearance or behavior; "self-conscious teenagers"; "wondered if she could ever be untidy without feeling self-conscious about it"