I have 2 teens. My 16 year old son is going off the rails and no matter how hard I try and I can’t stop him. He is rude, constantly lies, smokes weed and vapes. I’m not sure where I have gone so wrong. He was such an easy preteen and I worked so hard to make sure he was well mannered, polite, worked hard at school. I’m not sure how things have gone so badly wrong. He really doesn’t like me and swears at me and is very disrespectful. He used to be sweet and affectionate. I can’t see him as the same person, and he is constantly reducing me to tears. His dad is away a lot for work so I’m the one who has to deal with him the most. I also have a dd who is 13. His bad behaviour is rubbing off on her and it is breaking my heart. I always naively believed that if you gave your children lots of love, time and were good role model your children would be ok. I feel the last 16 years have been a pointless waste of my energy. I have put my kids first, and I was always a good kid and would never have dreamed of behaving the way my son does. He can watch me cry and it literally has no effect. He will never say sorry. I’ve stopped giving him money, I turn the Wi-Fi regularly as punishment but it just seems to make more unpleasant to live with.