from the sounds of it you do well. i was like this as well and i knew i needed to stop. i put too much pressure on myself. i knew i did well no matter what. i drilled into my head an A at 95% is just as good as a 100% on a report card. nobody was going to know i wasn't perfect. i didn't need to kill myself trying. so i developed a system and decided i wasn't going to worry about shooting for perfection anymore. i would first develop a study guide, writing everything down i needed to know. writing it down helped me remember it better. then i would read the study guide over and over, testing myself on it. i would get together a study group and test others and this would help me learn it. i didn't get obsessive about it. just read it once a night. sometimes i would write it over again. this is what worked best for me. i still usually got a 100 or maybe a 98.