What is Sympathy?
Sympathy is agreeing with another person’s opinion and sharing their feelings and concerns.
What is empathy?
Empathy is thinking about what it would be like to have the same life (including the same mentality, body and environment) as the other person.
Empathy, therefore, is a skill or an attitude based on your imagination, whereas sympathy is not more than a feeling.
Source: “The Courage to be Happy”