Why I'm posting this here: My roommate moved out of his mother's and step dad's home at 17, lived in a social house for a few months, then moved in with me. He has very loose contact with them and I feel like I'm the only person who can have an immediate effect on him.
I (mid 20s male) am living together with a 17yo guy for about 3 months now. He had some (light, I assume) trouble at home and was living in a social house with drunken people. He seemed like a normal, if a bit shy, 17yo and was the most favorable candidate for the open room I had.
Now he is getting from the front door right to his computer and rarely comes out. The rest of the flat barely exists to him, so not making things dirty, let alone cleaning does not enter his mind.
Additionally concepts like, not having the window open in autumn, while also turning on heating seem to be foreign to him.
He even put a pan full of burned pasta into the dish washer, not thinking about, where the pasta would go.
I'm getting tired of having to point out obvious things to him, since I have to address every little thing. Today I found him wrapped in blankets in front of his computer, while having his window open.
What can I do to make a lasting change on his behavior, other than tell him 3 different things, that he is obviously doing wrong every day.
I know I'm not a parent or relative, but I feel like I am forced to do some parenting on their behalf, that's why I hope this question is not too off-topic.
I should also mention, that I'm not a great communicator. I have trouble bringing up problems, that I feel are obvious, because I have the feeling, that if they are obvious, but are not getting done, why should my intervention change anything about that?
I also rather avoid confrontation. The fact, that I did bring up a few of the obvious problems, his response being to change exactly these but no more, or not for long makes me feel powerless even more.
My current plan is to keep a list of things I don't like, take him away from the computer to list them off and tell him, that he needs to work on them and his attitude, otherwise I'll throw him out (which is in my power).
Heating cost aside. I feel like I brought in a pre-teen, not a budding adult.