Hi Amit,

Everyone is different, so I don't know if any of the strategies I'll offer will do, but they may help.

I would do practice problems for maybe an hour at a time, and then take a good break (eat some food, watch some tv, etc). That is how I used to study all the time when I was practicing material. It helped me to focus on learning, and I found that after about an hour I would kind of stop being as efficient at learning.

When it's time to practice test taking, I recommend using Manhattan GMAT's tests. They let you do the exam in whatever timed scenario you would like. For instance, when I found that I was getting more questions wrong than I should have, I took the test untimed.

Otherwise, just focus one problem at a time. Don't think about the one before or the one after. The next thing you'll know, you'll be done.

Also, I don't know what area you live in, but ear plugs really work. They helped me just remove myself from distractions and get it going.

Good luck on the test!!