A Wish
If I was God, I'd only use my powers for one thing: to grant my friend a wish. One wish, because I know what she'll wish for. Her particularly because she can't hold her breath any longer. I know she'll do anything to get this one thing: cry, hurt others, hurt herself and maybe even sell her soul if she had the chance. But one wish, I'd give her. One, so she doesn't have to sacrifice a part of herself. One, so she won't drown.
And honestly, that's all I would do if I were God. The world was incomplete without war, famine, hate, and everything bad. Without all those calamities, we wouldn't have come to appreciate the small happy detours life granted us. I know what you're thinking: isn't it kind of hypocrital of me to grant my friend a life-altering wish when I was blabbing on about how the world would be incomplete without it's yang balancing the yin? It is. But she's my friend, and I want to be the yin that balances out the yang in her life. Contradicting, but I do it from the heart. Maybe this is why I haven't trascended into a God yet.