CSS Current Affairs:Reasons of failure

Current affair:
weak study
depending on notes 
weak geographical approach
mcqs part quite tough
lack of different perspectives
opinion based approach
no idea where to start its preparation
too lengthy and difficult to cover whole world
weak expression of english
Pakistan affairs:
poor guidance
one-book study
weak understanding of questions
not writing what is asked
lack of different perspectives
no time of revision during exam
lack of detail study
taking too much stress for this paper