The other path to power is taken by sociopaths. They are incapable of empathy, so they take power by using fear. They only understand love and self-sacrifice as an abstract concept, not something they would personally do. They motivate others through fear, and can only be swayed by fear. They threaten you with violence, with the law, with taking away things you value. The power they have isn't given to them because people like them - the power they have is given to them because people are afraid of them.
I think the average person operates on a mixture of both types, and don't get very far on either. Only when you focus your life completely in one direction or another, do you become an expert at gathering that kind of power. I guess that's what makes the difference between the saints and the damned.