My Dad died a few months ago. I already suffer from anxiety and depression. And now my 13 yr old son (who is otherwise a lovely boy) has been getting involved with smoking, and hanging round with an older teenager who smokes weed, and is a school drop out etc and took money off my son. The friends my son has all seem to just hang round parks and in town all weekend and have no other interests. Some smoke, vape etc. My son does athletics but this is only for an hour or two most weeks with a few competitions during the summer. I let him hang out with friends on the understanding he behaved. Clearly he hasn't. He is currently grounded but I can't keep him in forever. How can I trust him? He finds lying so easy