You know, you're also one of the first I've seen who can prove his/her beliefs with scripture and explain what it means
With the given verses I've never thought of it that way before. It does seem to show that things are determined by our actions rather than the preordination of God. Now, I don't qute see it that way, that the verses support the notion that God ultimately soften hearts (of whoevver hears the Gospel message), but as for prayer... maybe. It is the act that we can do, most assuredly, but that doesn't really say that in the two verses you've given.
BTW I have to go and talk to another person, but may I invite you to a stream I've created?
imgflip.com/m/Evangelicalism
With what I saw from you, you would be an invaluable member of the group because you'r one of the only ones i've met who knows doctrine and theology. The only other person besides me is Kate, a good friend of mine, but she is a Roman Catholic... not Evangelical like you and I.
You will see there that I've posted a number of memes already that is in relations to the fundamental doctrines of Christianity. I would absolutely love it if you can contribute.