Choosing to accept God's grace?

Surely it is only by God's intervention/inspiration/guidance that anybody is capable of making a right choice? That's what I think the Bible teaches. Consistent with this, christian universalist writers sometimes argue that a fully informed rejection of God's grace is inconceivable. Nobody, not even the most intelligent, well-informed and spiritually mature individual on the planet, can make a fully informed choice (try answering the questions addressed to Job in Job 38-40!). But one day everybody will be able to, thanks to God's ability to heal and educate us and above all thanks to God's love which never ends and never fails. So whether you come at it from a calvinist or an arminian angle, I believe there's only one way this show is going to end