
Ego
Positive or Negative
Ego can have either a positive sense, similar to self-respect, or negative, implying conceit. 
Ego vs Arrogance
An 'ego' is your self-image, while 'arrogance' is an offensive display of superiority or self-importance. 
Ego in Relationships
Ego can affect relationships; a high ego might lead to conflict, while a balanced one can foster mutual respect. 