Source : Webster's Revised Unabridged Dictionary (1913)

Self-aggrandizement \Self`-ag*gran"dize*ment\, n.
   The aggrandizement of one's self.

Source : WordNet®

self-aggrandizement
     n : an act undertaken to increase your own power and influence
         or to draw attention to your own importance [syn: {self-aggrandisement},
          {ego trip}]