Aristotle believes in formal relativism, that is, the mean of one person is different from another; how does his idea of telos or entelechy prevent somebody to think that “You can be whoever you...

Aristotle believes in formal relativism, that is, the mean of one person is different from another; how does his idea of telos or entelechy prevent somebody to think that “You can be whoever you wanted to be”, a rugged notion of individualism that is prevalent today?