Dear Zabeer, we understand how it is to prepare for an exam when the competition is too high. Lets take a step back and see what are in your hands and what are not. The amount of hardwork that you put, your focus and determination and the present are in your hands. The outcome is not in your hands. At times life is just like the updated version of  Ant and Grasshopper story. The Grasshopper is as usual lazy and the ant struggles everydsy to gather food. But one day, the Grasshopper's fate changes and becomes ultimate rich without working hard. The Ant who worked hard all its life feels cheated. And you might as will see people around you putting no hardwork but still become successful. While others work hard but don't get the desired results. But that should not tense you or upset you. Hope and confidence are important. So work hard and give yourself a chance. NEET is not the end of the world. You have multiple options that you can always choose from. Feeling tensed only worsens the situation. You might even forget what you have studied. So relax and stick to your ambition. While you cannot go ahead of time into the future, you can certainly mould your today for a better future. Try taking breaks atleast for 10 minutes for every hour while you prepare for NEET. Get your basics like formulae and others correct. NEET exam will not go beyond your 10+2 syllabus. And you have been studying those subjects all year long. So at the back of the head, you know the subjects. So all you need to do is just refresh your memory. Believe in yourself.