If you are well motivated and want to crack the exam then you have to gain all the knowledge about this exam. If you don’t have proper knowledge of this exam how you can prepare for it. It is the same as military operations. When military plants to do an attack on the enemy base, they have to gather all the information about them. They have to gather the maps, the situations, and have to make all the plans. Similarly, you have to gather all the information to go to your destination.