Which 'law' are you operating under
'The law of the Spirit of life in Christ Jesus has made me free from the law of sin and death.' Romans 8:2 NKJV
You say, 'I fall so far short of God's standards. Will there ever come a time when my old carnal nature will stop acting up, and trying to drag me down?' There's bad news and there's good news. The bad news is, just as the law of gravity is always in operation, so is 'the law of sin' that your fleshly nature wants to respond to. The good news is, you can access a higher law and operate in it. It's called 'the law of the Spirit of life in Christ Jesus,' and it overrides 'the law of sin and death' (Romans 8:2 NKJV).
The law of gravity says that what goes up must come down. But when you're in an aeroplane another law is in operation - the law of aerodynamics. It works like this: The plane moves at a certain speed, and the proper thrust enables it to climb out of gravity's pull. That doesn't mean the law of gravity is no longer the law of gravity. Getting the idea?
You ask, 'What is this law of the Spirit?' Good question. Here's the answer. When you're indwelt by the Holy Spirit and relying on his power rather than your own, which means being sensitive to his leading and obeying his commands, you're no longer controlled by 'the law of sin and death.' It's no longer about trying harder, but leaning harder on God's Spirit who lives within you and drawing from him the strength to live victoriously.
Soulfood: 2 Sam 14:21 - 17:13, Matt 26:14-25, Ps 123, ov 18:13-16