Free will can exist, but we must actually make the effort to use it.
Biology can only determine so much. Childhood as well. Typology helps us understand the general idea of a person, not the specific determined path.
There are no predestined paths, but there are likely paths.
Creativity and spirituality can help use break free of the deterministic pull.
It is so easy to follow impulse and do the deterministic thing. But we think and feel, choosing different paths based upon choice.