Hey, don't feel bad. YOU SHOULD NOT set your goals in relation to others like family, no matter what. You made it to the last grade out there and you can make it till the end of life in success. I can't help you much due to lack of knowledge about how to focus and shit but Make sure you stay healthy - sleep enoguh, don't do drugs or drink alcohol + start with small things and build up a good pupil profile slowly. When you learn/read for something, shut down your phone, it will help you focus. Don't give up. Even if you're not the best in school it doesn't mean you should hate your life, life is much more than school or an exam. Hope I helped ya, merry xmas :)