Okay kiddo, so article 8 of the European Convention on Human Rights is like a special list of rules that grown-ups in Europe have agreed to follow.
It says that everyone has the right to something called 'respect for their private and family life, their home and their correspondence.' That means that the things you do and the people you talk to are your own business, and no one else can spy on you or bother you without a good reason.
For example, if you have a secret diary where you write down your thoughts and feelings, no one can take it away from you or read it without your permission. Your parents can't listen in on your phone calls unless they think you might be in danger, and the government can't invade your privacy unless it's for an important reason like catching a criminal.
This right also protects your family life, which means your mom and dad can make decisions for you as long as it's in your best interests, but they can't boss you around or treat you badly. If you have a happy home with people who love you, no one can take that away from you.