The time tested tip is to do outstanding hard work for preparation. The syllabus of the examination and old question papers should be obtained and full time preparation by devoting up to 16 hours a day with intermittent breaks in between should be started immediately without wasting any time. All other activities including social activities should be stopped. Interaction with friends should be limited to the discussions about examination and preparation of examination only. Many aspirants do such kind of preparations and succeed also without any adverse effect on the health etc.