My son is on drugs, he is only 19 next month and he is addicted. Ive tryed so hard to make him see what he is doing to his life and health, but nothing is working. The drug he is on is marijuana. He has to have it every day or he really gets agro. I now feel a bit scared of him, he has so much anger in his eyes when he doe not have it.Ive asked him if he has a problem and he has told me yes. So I asked, when are you going to stop ? He replyed im not I like to do it. He hs been doing this for about 2 years and it gradually has become an addition.He only used to do it at partys and stuff like that every now and again. He works and makes good money,but it is getting him nowhere. He has not got a car or licence . I take him to work. He does pay his way but. How do I stop him,or make him see what he is doing to himself and his family. Its such a shame because he is a great person, and its so hard to except what is happening. This is changing his nature, and as his mum im finding it so hard to except. Ive tried so hard, and told him how I feel. But I does not seem to worry him. Before this he would not dream of doing anything to hurt his mum. What to do.