General usage:
* His ego was bruised after losing the competition. (Meaning: he felt bad about himself after losing)
* She has a large ego and often brags about her accomplishments. (Meaning: she thinks very highly of herself)
* The company's marketing campaign was designed to appeal to people's egos. (Meaning: the campaign tried to make people feel good about themselves)
More specific usage:
* The therapist helped him to understand his ego's role in his relationships. (Meaning: the therapist explained how his sense of self affected his interactions with others)
* Freud's theory of the ego, id, and superego is complex and influential. (Meaning: Freud's theory about different parts of the mind is important)
* The artist's ego was so large that he refused to collaborate with others. (Meaning: the artist was too proud and unwilling to work with anyone else)
Remember that "ego" can have different meanings depending on the context. It can refer to a person's sense of self, their pride, or even a psychological concept.