I'm curious if anybody else has felt this/ what they did to deal with it. I starting going to school with the intention of working in very theoretical physics, something along the lines of M-Theory possibly. I'm in my third year double majoring in physics and mathematics. Unfortunately, I've steadily lost interest in the subject since starting. I feel that this is because I'm not learning about anything that I was originally interested in. I maintain a high GPA and have done research, and feel like I could get into a pretty good graduate school, but I'm not sure if I actually want to or not, because I haven't taken any classes in what I'm interested, solely because it seems that my entire undergraduate career has been spent taking prereqs for the classes that I'm actually interested in taking. Has anybody else felt this dilemma and then ended up getting really excited in grad school, even though they found their undergraduate experience to be really mundane/ does anybody have any suggestions?