There is in the youthful spirit a pervading optimism that cannot be squelched, no matter the power of the opposing force. Anne Frank's novel ends with a line that conveys this pervasive idealism:
Despite all the horror and brutal oppression, people are still good at heart.
Anne is a bright teen-aged girl who records her struggles to be cooperative with adults and to make friends and get along with her parents. Like many girls, Anne writes in a diary in which she pours out her sorrows and desires and, finally her apathy in not caring what becomes of them. She undergoes the emotional changes typical of her age, finding Mrs. van Daan, for instance, to be interfering and her son Peter uninteresting. Typically, also, Anne's relatioship with her father is a happy one, but her relationship with her mother is a bit strained. Anne believes that her mother's scolding is unnecessary. In short, Anne wishes to be treated as an adult although she does not often wish to behave like one.
There is a brief romance between Anne and Peter; however, Anne realizes that he is not the boy of her dreams. With an intellectual ability that is superior to Peter's, Anne, nevertheless, hopes that she will meet her Prince Charming. On page after page, Anne describes her budding womanhood, her optimism, her thoughts, desires, and feelings to Kitty, her confidant.
No matter what situation it is, life or death, teenagers are always the hyper, excited selves they are. It's the way of life.