Because there is only one child in the present family, parents are used to letting him stay at home, so he naturally formed in the environment where he grew up. Everything belongs to him, and he has the right of priority, and he doesn't know how to consider other people's feelings. After entering the school, he has always formed the habit of living with everyone. He still handles things according to his inherent living habits, but no one in your dormitory has the same knowledge as him, so help him now.
Everyone is in the same dormitory and class, so it's best not to intensify contradictions. Understand his personality and habits, pay attention in daily life, put things away, put important things in the cupboard, lock them, and don't pay too much attention to unimportant things. Of course, if he goes too far, he needs to understand that his behavior has affected everyone's life, and it can also be solved by the class teacher or the student monitor.
Force cannot solve the problem. One more friend is better than one more enemy.
So do it according to the specific situation. You can face this problem with everyone in the dormitory. * * * has a position. With him, I believe the problem will be solved better!
Look at the problem optimistically and be happy every day!