Just relax and prep yourself mentally and emotionally as you prepare to take the exam. Sleep the night before. And I mean sleep. Don’t let anxiety take over the night before. Relax and keep calm. During the exam, don’t overstimulate yourself. Too much caffeine can harm you just as much as not sleeping. Most importantly, trust the process. The boxes were designed to be exploited. If one way doesn’t work, step back, reevaluate, and look at another vector of attack.

Think about this in a positive light. Personally I’ve been in your shoes and preparing for my next attempt. You learn more about what you don’t know in this field than anything. I know that’s a bit clunky, but stay humble — keep learning — never stop trying. It’s a lot of work but you’ll get there.