Right, okay, bear with me here.
Are we more driven by our love for ourselves, others, or a higher power?
My immediate answer was "others" until I thought about it some more. Why do we love others? Why do we help them out? Why do we sacrifice for others? Answer: it makes us feel good. It makes us feel good to help out somebody we love. Of course, there's nothing wrong with that, but my point is when stripped down, our motives are selfish. However unaware we are of this (probably because pleasing ourselves is so innate) our love for others is driven by our love for ourselves.
Take for example, a person who refuses himself a relationship as a form of punishment. He feels he doesn't deserve the pleasure of being in a relationship, nor have somebody love him.
The same argument applies to the "driven by love for a higher power" argument. We are benefited by our love for others.
So then, can we conclude humans are most driven by love for themselves? It makes sense, but not gonna lie, makes me sad.
You should be driven, first and foremost, by love for your self.
If you have to choose between your life and a stranger's, you should choose yours.
If you have to choose between your happiness and someone else's, you should choose yours.
If you have to choose between your bills and someone else's, you should choose yours.
If you do not make sure that your needs are met, your needs will not be met. If your needs are not met, there is precious little you can actually do for anyone else. A common axiom is "Don't set yourself on fire to keep someone else warm."
I consider protecting oneself and keeping oneself sound, safe, and healthy to be ultimate acts of self-love. Indeed, I think that each person is the single best person for these jobs in regards to themselves: who else is with you all the time? who knows your pits and strengths? etc, etc.