Empathy is to think how others feel.
To understand the concept of empathy we need to be aware of our emotions, and experience our feelings. We need to talk about our feelings and be able to share them with our close friends and trusted people in our lives. That will help us to understand the feelings of others. Only then will you be able to put yourself in their shoes in order to understand them and have compassion for what they are feeling.
Having empathy will make you a better friend to your friends!