Please help

My name is Prakash. Iam having a problem. Can anybody tell the solution to this problem.My dad and mom have been married for 23 years and she was not happy from the past 23 years.My dad is a Mommy's boy. My grandmother does not like my dad at all. She acts as if she likes him but she loves the rest three,i.e. my dad's younger brother and two sisters.She always thinks about them and she has given every penny to them. She did not give even a penny to my father but she expects that my father should spend his money to them and not to his family.My mother does not even know my father's salary and she should beg everyday from him for household needs.But she cannot leave him as she is a housewife.He does all stupid businesses and loses all his money and shouts at my mother to bring money from her mother's home. He does not even care my brother and me and he pays fees very lately every month. Last year I could not clear the IIT-JEE and now Iam taking long term.He has been putting continuous pressure on me and is threatening me that I should apply an education loan and finish my B.Tech if I won't clear JEE this time.But I want to do MS also and it costs me atleast 25 lakhs.He is not in a that bad position that he cannot pay my fees. He has a very good job and we live in a very big house.If I achieve anything he boasts in front of others but if I won't succeed he shows HELL.This is the main story but there are many other things in my story which I did not include.Can anybody tell me what to do.

It does not look like you in your current position can help anything right now. The only thing you can do is wait until you can go off on your own. Then you can make your own choices about what to do with your education etc. Until then, my advicer is to put on a brave face and take it.