Take the practice test to gauge where your skills lie. Consider hiring a certified GMAT coach or enlisting in a series of group study courses as guidance on troublesome areas. As test day nears, do not overexert yourself over-studying or falling prey to pre-test anxiety. Make a habit early to get ample sleep and nutrition to prepare for testing.
Make a plan and stick with it. Whether you've given yourself ample time to prepare or you're shaving down to six weeks before, commit to a study schedule that is realistic to follow and maintain it. If you lack discipline, join study prep groups and obtain partners who can call or text you reminders to study. Allocate the time needed to study specific sections and plan accordingly.
Tackle tough topics with fervor to sharpen your knowledge in those areas you are least strong. If you excel in analytics and fall short in math equations, rely on your intelligence to help you soar through analytical problems for the most part and use the heavy percentage of your time studying sections that are more challenging for you.
Visit your local library or bookstore for GMAT study guides. Consider purchasing guides that contain supplemental study tools such as CDs and DVDs, flip books, flash cards and audio kits.