The idea being that you do not turn into a Christian all at once, it is not an overnight thing, although you will be infused with God's grace all at once, being a Christian is not an event, it is a process. You gradually come to understand what the domain of your will is, and you do your best to reconcile your will with God's will to humble your arrogant tendency to judge God.
Yeah, that's great and all. But here's a reminder that you can praise God up and down all day long, and even curse God up and down all day long. At the end of the day, God doesn't care about you or me.