Is this certification really worth losing my sanity?

Hello guys, i am just stuck with my studies and work, I have read the PMBOK guide three times, but I still fail the practice quizzes. I have a full time job and two kids, so I have zero time to study properly. My exam is next week, and I am panicking. I feel like I am going to fail and lose my money. The pressure is so bad that I genuinely wished I could find someone to take my PMP exam just to get it over with. How do you handle the fear of failing in exams?