You have to be in control to be successful during exam preparation and execution. Control can also contribute greatly to your personal and other professional goals.
The objective is to be confident that the best possible performance is being generated. Most accountants study this process in relation to standards costs, i.e., establish cost standards and compute cost variances.
Develop and enforce standards in all of your endeavors. Exercise control, implicitly or explicitly. Most endeavors will improve with explicit control. This is particularly true with certification examinations and other academic tests.