I don't recall Cheerchick being upset about what others thought about her; it was a genuine concern to change herself for what she saw as factors limiting what she could accomplish, independent of image. In this respect, it's not "accepting yourself for who you are," but more "what can I do for myself to increase efficiency?" Not to condone the notion that efficiency is positively correlated only with degree of "J-ness." Cheerchick just believed that having the organization and decisiveness characteristic to ideal "J's" is what would lead her to this efficiency.
"In the game of chess, you can never let your opponent see your pieces."