ego trip

1. N-COUNT If you say that someone is on an ego trip, you are criticizing them for doing something for their own satisfaction and enjoyment, often to show that they think they are more important than other people. 追求自我满足; 自命不凡[非正式]

I was on an ego trip and only cared about earning a fortune. 我自命不凡，只关心赚大钱。