Check out this excellent and concise post at SEA on the nature of faith and why the Calvinist view is problematic. Here is an excerpt:
It also has a logic problem, because from a Calvinistic perspective, we have to wonder what was the point of the faith/works distinction in the first place. In other words, if we cannot boast in our faith because it is predestined by God, then we also cannot boast in our works because they are predestined by God. But the Bible specifically says that salvation is by faith rather than works, lest any man should boast. Paul’s explanation is not very meaningful if free-will, not works, is what gives us a reason to boast.