Ok so in theory the power is the power of God. You can change yourself or you can change the world. The question then becomes, if I change myself, do I lose the ability to change the world? I'll be honest, there's changes needed both to me and to the world as such if it becomes a choice of "The greater good" I'm not sure if changing the world would be worth while. I mean, at the end of the day, you're making the world different, not necessarily better. As such in that situation, I feel that making changes that make me happier about myself would be more beneficial.

If the decision to change the world or yourself is not exclusive you could put me down to change both.