Source : Webster's Revised Unabridged Dictionary (1913)

Self-sufficient \Self`-suf*fi"cient\, a.
   1. Sufficient for one's self without external aid or
      co["o]peration.

            Neglect of friends can never be proved rational till
            we prove the person using it omnipotent and
            self-sufficient, and such as can never need any
            mortal assistance.                    --South.

   2. Having an overweening confidence in one's own abilities or
      worth; hence, haughty; overbearing. ``A rash and
      self-sufficient manner.'' --I. Watts.

Source : WordNet®

self-sufficient
     adj : able to provide for your own needs without help from others;
           "a self-sufficing economic unit" [syn: {self-sufficing},
            {self-sustaining}]