Weekend Update

My weekend was pretty uneventful. The usual, oldest child instigating fights with the youngest child. I am about ready to pull my hair out trying to deal with this. We have tried everything to get her to stop. My youngest child is a whiner, and after a while it really grates on your nerves. This in turn gets the oldest child into A LOT of trouble. For the most part, they are excellent children. This is the worst attribute they possess, I believe. If anyone has any advice for how to get them past this (outside of killing one of them), it would be greatly appreciated. I have reached the end of my rope.