full of yourself
Synonyms
Examples
As for fame, it can go to your head and you can become full of yourself.
Don't go getting full of yourself becuase once you do, somebody's going to come and let the wind out of your sails.
The thing is, you don't want to overact or be full of yourself.
Number four, we're going to play like winners, play the game the way it's meant to be played. Don't get full of yourself if something good happens. Don't get too depressed when something bad happens.