How do I defend the Church's teaching on free will to a Calvinist?

I am in a discussion with a coworker who is a Calvinist. He is adamant in what I understand as predestination; that I have no choice in faith, that since I am follower of the Catholic Church, God has most likely not chosen me. Only if I “convert” to Calvinism would I then be proven to be chose by God. How can I justify the Church’s stance of free will?

Thanks!

Jessica

These links should help you understand the Church’s teachings on free will and predestination. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.

Recommended Reading:
Predistination vs. Free Will

Do Catholics believe in predestination?
Is Calvinism compatible with Catholicism?
Why would God create those he knows will go to hell?

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