Falsehoods I have internalized. I'm thinking about asking my students to make a list too.
(1) To be good at math, you have to get concepts quickly
(2) To be good at math, you have to get things the first time
(3) To be good at math, you shouldn't have to struggle with a topic
(4) To be good at math, you have to feel certain
(5) To be good at math, you should never have had to repeat a class
(6) To be good at math, you should be vocal
(7) To be good at math, you must be so innately smart that you're above other people
(8) To be good at math, you can follow other people when they talk about math, and if you can't, you're bad at it.
(9) To be good at math, you should be younger than other people in your class. Mastering it younger=being innately good at it.