The ability to sense emotions of others and even control emotions of others.
Awakening This Edit
You just have to make yourself KNOW that this exists within. Hell, even considering Epistemology, KNOW it. Program your mind to know that you can do it. Meditate. Share your experiences with us.
Things you can do with thisEdit
You can sense the emotions of others (some naturally, some with focus). Some can sense things other than emotions but are related. Specifically their personality, because thats what its really about if you think about it.
It is also said you can control the emotions of others if you're powerful enough.
Some people, even if they're not a full on empath, can link to other people.