This has always been one of those confusing topics for me. Its easy enough to say that we're justified by faith and not by the law, that our salvation is not bound up in what we do but I, at least, almost always judge the state of my faith, or salvation, maybe, by how well I perform my religious hoop jumping. The New Testament is quite clear that a Christian ought to live a life which is in accordance with God's standards. To not live that way is ungodly, unchristian and just plain wrong, but then goes on to tell us that doing those things is not what makes us saved. But to not do those things, quite possibly, can mean that you're not saved. That's a glib way to put it, but the Bible is pretty clear that the Christian ought to walk uprightly, no two ways about it.
Obedience, again, is the in the forefront of my mind. The way which my mind understands this is to say that we obey God, not the law. Its a subtle shift in focus but it makes all the difference. Legalism obeys the law, Christianity obeys God. Legalism tries to be good enough, Christianity lives in a relationship with one it loves. Legalism is caught up with itself and how it measures up, Christianity is caught up with being in God's presence.
A life of faith, a life of walking in relationship with God will have rules, unimaginably strict rules as a matter of fact, rules involving the motivations of your heart and mind, but they cannot be the focus. Walk with Him and He'll give you a heart which follows these rules by nature, not by diligent effort. But, somehow, in that, it will still be SELF-control, it will still be your human will exerting itself to obey rules and not God putting you on auto-pilot.
Its terribly difficult not to judge ourselves based on our ability to keep rules as it makes a really good way to tell how good of a Christian we are but its only a distraction. Find God, get close to Him, do what He says, go where He goes and let Him be your judge. Work out your salvation with fear and trembling.
