He's on a self-indulgent 'ego trip' with his latest movie, which he wrote, directed, and starred in himself.
Winning was good for our 'egos'. = Winning boosted our 'egos'. [=winning made us proud of ourselves]
a bruised 'ego' [=a feeling that you are not as important as you thought you were]
(..) Miss Tate, isn't it? Even before you became a recluse, you never came to these things. The proceeds go to the big fat spread. It's not about charity. It's about feeding the ego of... whichever society hag laid this on. Actually, this is my party, Mr. Wayne. Oh. (..)2012 The Dark Knight Rises