How can I calm down and sleep better?

Hi I'm at home I'm feeling very anixety and I'm having. weird feeling I'm really tired and sleepy now my sister tired and me are watching TV In am very anxious what could to feel safe and calm and positive do you have any advice for me so I sleep do you have any tips or advice that could help? ( by the way its like 12 pm at night where I live) please help want to go to sleep stay asleep so i can sleep ( and if your thinking sorry about the repeat myself very sorry just tired ) i want advice now please comment and give me tips and good advice!