same here im an musician in music we have music theory a b c and d i past all the exams when i was 12 years old now im 24 starting my bachelors degree in music in october and im taking extra classes in music theory just because im always doubting myself even though i know that the knowledge is there   for me personally i get upset when im not sure on a topic when people may expect that i know everything about it it makes me feel like im an idiot whos just acting like a know it all