i think its better if u become an good noble muslim ,pray 5 times a day and  believe in god allah plus there is no god expect him read the quaran with wudzo meaning clean body face etc..and finally pray 2 god about making u succeessful person in the world and the last day so once u do that you can can do anything successfully in your essay +exam believing in ur god.....!!! dont take any stress just leave everything 2 god he will sort it all out take peace and be a good pious person and stay away from evil wrong paths and the devil