How can one individual change society?

get quotation from the giver.

Jonas's community is founded on the idea of Sameness-the elimination of difference in its members. In order to achieve this Sameness, individualism is discouraged, and rules and discipline matter most. Jonas learns from an early age that both breaking rules and being different is considered shameful. By celebrating group birthdays, allowing only one kind of clothing and haircut, assigning spouses, jobs, children and names, and eliminating sexual relations, Jonas's society stifles the things that allow for individual differences. Without mirrors, there can be no vanity or jealousy. Without sex, vanity loses its importance, and competition and conflict are eliminated. In Sameness, no one knows the meaning of loneliness, but no one knows true happiness either. Also messenger was a absolutely good book as well.