Strength of Argument

What do I feel so strongly about that I could defend the topic to the death? The only thing I can think of off the top of my head is my children's health. I am currently in a battle with my ex-husband--really his new wife--over what is best for my chronically ill child. I get emotional about this topic; my feelings range from sadness to extreme anger about this subject. This is indeed an area where I am impassioned, but could I write a persuasive document about it? I'm not sure. I need to contemplate more about what topic I will choose.