Yes, it is God who works in you. And, yes, there is work for you to do. Yes, the Spirit empowers you to do the work. And, yes, you do the work.
Francis ChanLukewarm people don't really want to be saved from their sin; they want only to be saved from the penalty of their sin. They don't genuinely hate sin and aren't truly sorry for it; they're merely sorry because God is going to punish them. Lukewarm people don't really believe that this new life Jesus offers is better than the old sinful one.
Francis Chan