But as we get older we are influenced by language and our personal observed histories. Then we can act upon our knowledge for whatever purpose we desire.
I think this can limit us, too. I went to school with some girls from very... how shall I say... privelidged and narrow-minded backgrounds. Their upbringing prevented them from walking through a poor area of town (in some cases, from walking anywhere!) because they were terrified of being attacked. They chose "acceptable" careers, because they believed that they couldn't work in a man's job or succeed in science or technology. You get the picture...
What I'm trying to say is, knowledge only liberates you if you have enough of it! A little knowledge is a dangerous thing, especially if that knowledge prevents you from questioning or learning any further knowledge.
I don't feel you can reasonably deny having at least /some/ free will in your life.
I have to agree.

In fact, an Existentialist would say that you are completely free: people only seek to impose structure on a random, meaningless world in order to negate their feelings of anxiety and dread. I'm reading Jean-Paul Satre at the moment: he noted that people will often relinquish their free-will. For example, the person who has an affair because they were "seduced," instead of admitting it was their choice.
Descartes believed humans could doubt all existence, but could not will away or doubt the thinking consciousness, whose reality is therefore more certain than any other reality. Existentialism decisively rejects this argument, asserting instead that as conscious beings, humans would always find themselves already in a world, a prior context and a history that is given to consciousness, and that humans cannot think away that world. [Wikipedia]