I'm currently reviewing the last chapter of griffiths e&m (relativity) in preparation for griffiths elementary particles. I've chosen to do particle physics for my master's thesis. I've got total brain fog. I had never studied particle physics before, so reading the first 2 chapters was fascinating. I got a boost of motivation because I feel like it's "my field." Then I go back to reviewing relativity, which I've already done 2 years ago, so I've forgotten it, but it shouldn't be harder the 2nd time around! Maybe because it's not new and novel? My brain doesn't want to do physics anymore. It makes me so stressed out! I know summer has just begun but I've actually taken 3 semesters off from school so far due to arthritis in the hip (a genetic condition). I'm hoping to go back this fall. Now I'm not so confident that I can. Maybe it's the stress of all the crap that I have to deal with that's affecting my ability to study.