Empathy isn't something people are just born with or not. It is something that people have varying ability to do and are able to increase or decrease. It is a skill. We, generally speaking, have the right parts to empathize, but we still need practice. What better time than now?
The right amount of empathy is the amount that is needed for your life situations. This is going to vary from person to person. So feel free to take the pieces that are necessary for you and the life you want to live and leave the rest.