its common in your age not to understand what to do and how to do things. these feeling make you feel sad and stressed. so you just need some support and professional help to get over it.

Dear Ms. Your problems are pertaining to poor understanding of your self and others, your having symptoms of anxiety and low self worth. Consult Psychologist for the problem

Your message is not very clear, but you seem to be upset and stressed about some family and study issues. If you are feeling low, hopeless, overwhelmed or suicidal you need to consult a Psychiatrist immediately. Stress tends to occur in a lot of different aspects of life and you need to learn how to handle it appropriately. As far as improving your studies are concerned, there are many techniques you can apply. If u u feel anger or hate towards yourself you need to take professional help to come out of it. It will be better if you can give a more detailed picture of what your problems are. You can consult me for further treatment if required.