self-aggrandisement self-aggrandisement /ˌsɛlf əˈɡrændɪzmənt/

noun

1. () [British] An act undertaken to increase your own power and influence or to draw attention to your own importance  ( ego trip [Informal] , self-aggrandizement , self-aggrandisement [British] )
   an act undertaken to increase your own power and influence or to draw attention to your own importance