How to Overcome Walls in Preparation for GMAT

After EGMAT, I started very strictly thinking with some rules. For example, there are lots of rules that can be bandied in GMAT. And as GMAT Ninja often says, there are very few absolute rules on sentence correction. Other than that, I don't really know what to suggest with reading comprehension. There are really lots of like, tricks or like shortcuts or something like that. Just read, just improve your English and that's all I can recommend anything else."