I'm 49 and our son seemed the most difficult to help with his moodiness and problems.Your son's dad passing away has had a huge effect on him, and he doesn't realize just how much.It was quite a while ago,but he's still grieving.He doesn't even understand why he feels like he does.Staying up all night and sleeping late in the day, that is a teenage thing.Everone I know says the same thing about teens, especially boys.Your son lost his dad just when he needed him most but you also lost your husband. You both have this in common. He may not understand this. If you want my email, ask and I'll see what I can do. The art of communication may be the hardest thing for you both to learn, but is the most beneficial way to help each other. We learned this with our kids & we were amazed at things they started telling us, even confessing. They all had issues to deal with and just didn't know how, and neither did we, until we forced ourselves to learn to communicate with them. Remember, when we have a child, no matter how many we have, we have to learn parenting all over again with each one, because they are all different and each one will have there own set of problems to deal with. Our son was such a night owl, we suggested he got a night job.This worked well when he became a night-fill shelf packer in Woolworths. Within 2 years he was offered manager. It all helped because most teens suffer from lack of self esteem, awkwardness, low confidence. If your son was able to get any job he would feel much better about himself and his confidence would rise.He may be worrying about the state of the world and what kind of future there might be for him and others. A lot of young people find this hard to deal when they see the way the earth is being ruined, and the terrible conditions some people have to live under. There is help available. Anyone who reads this can ask and I'll try to help if I can. In the end, they need love and affection and a much brighter hope for the future.