I am currently taking an Analysis course. We are using Folland's Advanced Calculus textbook. The professor is good. The reason I am not doing so well is because of my own naivety. I do understand what is going on in the class but I am shooting myself in the foot with dumb things. For example, today we had a quiz in class. The problem was to evaluate an extremely easy limit. Having taken a multivariable class that was not proof intensive, I took evaluate to mean find the limit. This limit was extremely obvious so I didn't bother proving anything. The epsilon delta proof would have been just as easy if I were to have done it, but I didn't do it so I am probably looking at a 0. This one quiz obviously won't be detrimental to my grade, but the professor is notoriously harsh when it comes to tests so I won't have a safety net to fall onto if I mess up a question on the midterm/final. I got burned today and I have learned my lesson but say I take a B- or something in this class. Is graduate school a lost cause?