What theme is found in this excerpt from f. scott fitzgerald's "bernice bobs her hair"?

as bernice took down her hair she passed the evening before her in review. she had followed instructions exactly. even when charley paulson cut in for the eighth time she had simulated delight and had apparently been both interested and flattered. she had not talked about the weather or eau claire or automobiles or her school, but had confined her conversation to me, you, and us.

but a few minutes before she fell asleep a rebellious thought was churning drowsily in her brain—after all, it was she who had done it. marjorie, to be sure, had given her her conversation, but then marjorie got much of her conversation out of things she read. bernice had bought the red dress, though she had never valued it highly before marjorie dug it out of her trunk—and her own voice had said the words, her own lips had smiled, her own feet had danced. marjorie nice girl—vain, though—nice evening—nice boys—like warren—warren—warren—what's his name—warren——

she fell asleep.

to be a success in life it is important to follow the rules of society.
to be successful a woman must be beautiful and intelligent.
good clothes are necessary to make a good impression.
even shy people can become self-confident if given the chance.
moral values are more important than success and wealth.