Hi, my Autistic 10yo son struggles to identify his emotions, and as a result can end up in quite a state when he's stressed/worried. He usually ends up feeling overwhelmed once he goes to bed, and I'll find him at the top of the stairs a couple of hours after putting him to bed saying he can't sleep, he feels sick, and covered in blood from where he's either picked at his skin, or bitten his lower lip! When I've talked to him about it he says it's not done on purpose (so not self-harming as such), he doesn't realise he's done it until he sees the blood. It seems to be what he does as he's lying there worrying. How can I help him find a safer/healthier way to deal with his stresses (& help him to recognise it better so he can talk to us about it!)?