Hi Moshpa, My 6 and a half yr old is the same. He is defiant and he lies. He says he hasn't done anything when you have just seen him do it. He is not a problem at school, they haven't seen any of what I get. He likes routine and if it changes he has a meltdown. If school has a mufty day where they can wear what they like we both hate it. It can take us half an hour to get out of the house and that is after the socks, shoes, tags etc causing meltdowns. He shouts at me constantly which I can't tolerate and when he is angry he has started to lash out at doors, furniture or me.
I have noticed he also accuses me of saying things that I haven't said but is the answer that he would want to hear. E.g. Can I have the tv on, I have said no but he will scream at me that I said he could.
I am a single parent and a foster carer and the foster babies are easier to look after than him. Although he is adopted. Keep pushing on. We will get there in the end all-be-it very grey.