I believe the answer is: great personal fulfilment is achieved when a person is given the freedom to pursue that person's dreams.
According to Aristotle, every individuals that is born in this world had to pursue each of their own self's actualization, which is a situation where we felt that we truly use our full potential/capabilities. This could only be achieved if we let those individuals pursue the things that they care about and not restrict them with societal expectation that is not suitable with their talent.