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]
(..) The rocket performed perfectly It just landed on the wrong planet. See we all begin wide-eyed... "pure science" Then the ego steps in, the obsession And when you look up, you're a long way from shore You can't be too hard on yourself, Maya. I mean you gave your research to a think tank. (..)2013 Iron Man 3
(..) Tony, Tony You know, I invited Tony to join AIM years ago and he turned me down But something tells me now there is a new genius on the throne, who doesn't have to answer to Tony anymore and who has slightly less of an ego. It's going to be a "no", Aldrich... as much as I'd like to help you. (..)2013 Iron Man 3