There is no reason to be sad. No one is doing anything against you. It is only your mind fooling around with you. You have a lot to be thankful for. Think of how you make your family happy just by being with them.
I know for some of you is hard being happy. Everything will be alright. It will turn out fine. Have faith in God that people love you for who you are. I am optimistic about my life. You should be too.
Family is there to support you and make you happy. This Christmas be happy and optimistic about your life. All you need is faith. Try your hardest to respect everyone. Think of happy thoughts.