What is wrong with me??? I'm attempting to major in physics at Cornell University. I'm an undergraduate. It's my junior year. I have done alright in school so far (I have a 3.62 GPA here, I've been taking the honors physics sequence, I have A's and one A- in all my physics classes so far.) This semester though, I am failing horribly. I'm spending every waking minute I possibly can on school, either studying or doing homework or going to class. I'm only sleeping a couple hours a night on weeknights, with more on the nights before exams and on weekends. Despite this, I can't seem to pass my classes. I'm taking Advanced Honors E&M, elementary spanish, a class on electronic circuits, and a class on mathematical physics. Of those, the only ones I'm passing are E&M (doing somewhere around the mean, it's curved to an A-) and Spanish. I'm failing circuits and math, and I don't know why. I've been doing okay on the homeworks, and spending as much time as I can possibly spare preparing for each test. I just got back from the circuits midterm, and I went into it honestly thinking I would do fine - I read the book twice, re-did every homework problem and breezed through them, and studied all my notes. But when I got to the exam, I wasn't able to find a complete answer to a single problem. And from what people said afterwards, they didn't find it to be that hard. What is wrong with me? I can't work any harder. Why did my brain just stop working?