**Egoism** is the practice of prioritizing one's own interests and desires over those of others. Here are some examples of how this word can be used in English:
1. His **egoism** and lack of empathy make it difficult for him to form meaningful relationships with others.
2. She constantly talks about her achievements, it seems like she suffers from **egoism**.
3. The politician's **egoism** and desire for power led to many scandals and controversies.
4. His **egoism** prevents him from admitting when he is wrong, even if it means losing respect from others.
5. The company's CEO's **egoism** led to poor decision-making and a lack of focus on the needs of customers.
6. She tried to hide her **egoism**, but it was obvious to everyone around her.
7. The teacher's **egoism** caused him to favor some students over others, leading to resentment and conflict in the classroom.
8. His **egoism** made it difficult for him to accept help from others, even when he needed it.
9. The writer's **egoism** prevented him from recognizing the contributions of others to his success.
10. The team's success was hindered by the **egoism** of some of its members, who refused to work together.