We've been going through a rough patch with DD as well... and I know why, but that doesn't make it easier. She was always so intense when she was younger too and while it got slowly better, it was so hard to see that at the time.
So this is just a hug and sympathy and YES it's so hard when you find yourself thinking "if I'd have really known before hand, I may never have signed up for this." It's the ultimate taboo in our society that a mother might ever feel like "really, this is not what I wanted and may be more than I can handle." But it happens and it's OK... because the rest of the time you think "this kid is so awesome and I'm so happy he/she is in our family."
The best advice I EVER got about parenting was from my midwife. She told me "with kids, everything changes -- and that means that when things are great, enjoy them because everything changes... and when things are rough, it's OK because everything changes."
