Do you know one thing accepting the failure before time is itself negative approach? I think instead of taking tension you should start preparation and work hard IN SHAA ALLAH success will be yours. CSS itself is a game of nerves there are many tough steps to be passed. You should start your preparation and don't think even once during this time about your defeat. First try it then say whatever you like " Jang shuru hone say pehle hi agar sipahi haar maan lay to woh behtar perform kar paye ga ya agar woh jeet ka jazba lay kar maidan main utare to woh behtar perform kre ga? " Hope you will understand.
Best of luck

__________________
When you really want something, the whole universe conspires in helping you achieve it!!!