Hii Pratul,

The main reason behind any problem is ourself. And it is our responsibility to make it corrected. Don't worry about the studies. Stay well , Keep relaxed and think about your mistakes. Then go to study. Never ever study because someone is forcing you. Study at your own time and interest. Instead of studying for hours make a target of completing a particular topic or chapter for the day. So that you feel confident. Keep going. Life is not only about Studies. There is more than that. Keep going. Don't worry much about that.