DS has just kicked off once again. He's hurt his sister (deliberately and unprovoked), but rather than say sorry, hang his head, take a few cross words from me and move on, he's stropped off then come back and given me a load of "I hate you's" etc etc. It's like a red mist descends which turns him into a different person. Once it's lifted, he'll be very sorry but tbh, it's happening too often and I'm well aware that we're heading into the choppy waters of the teenage years, so I really want to get to grips with this now, before it gets completely out of hand.
Please help