Empathy is one of the two primary traits (the other being creativity) you possess when you became you, and together both creativity and empathy go together to make up autonomy, which is the ability to perceive consciousness in an external environment and respond to it independently. Autonomy is what defines organic life in all its forms.
More than likely empathy also defined your very first social experiences immediately after birth when you emerged into this world wriggling and screaming and bawling your eyes out because you'd just been evicted forcefully from the warm comfort of your mother's womb. We're assuming that you weren't dropped on the floor and shovelled into a cot. More than likely you were held carefully and tenderly first by hospital staff, a doctor, and then by your mother.
And then you shut up.
But also, just like creativity, empathy is a skill that you develop through discipline (please see previous entry) and together with creativity and discipline empathy makes up three core life skills which you need to develop in order to be yourself, gain mastery and control over your mind and also to be able to connect to other people. Just like creativity if you don't make the effort to develop empathy you lose the ability to empathize and become less empathic to others or find it harder to connect to other people.
There are three core components of empathy, which are:
Empathy is no different from creativity. It's based on consciousness, not energy. This means that the more you use it, the more you have available to use and the easier it becomes to use it and obtain it from others.
Empathy is the opposite of apathy, which is where everything is much harder and needs more energy and through which you don't connect to anyone but end up just feeling knackered.