Why???

Why does it seem like I'm destined to struggle? Isn't being a single mom of 3 enough of a struggle? 

I know some of my choices have sucked. But damn, I'm not on welfare, not a drunk, never done drugs. Work a 40+hour week, only get paid for 40, no health insurance. Still can't get ahead. One step forward a gazillion steps backward.

What have I done so horribly wrong that it seems I'm eternally punished for.