Thanks a lot. Well, my first attempt was quite haphazard. Started meaningful preparation after submitting my admission form and I was doing job; it was not quite well managed. For second attempt I did proper planning; picked topics; made comprehensive study plans; made bullet point notes; scheduled everything. I used to give some 6-8 hours daily. One plus with me was that I had experience of teaching along with literature background. Essay and English never gave me any tough time; I could manage these on my own with least preparation. For current affairs I visited authentic websites and made notes. Rest was easy. You need to have some writing potential and good analytic skills. If you don't have; you must develop these.