I don’t recommend advertisements which seem to be keen on “natural” ingredients, because often natural things are excuses for bad behaviour: “It’s only natural”, “Doing what comes naturally” doesn’t often mean doing something good.
Paul knows about this, and offers a simple choice (we are reading Romans 8:6-11). You can live in one (but only one) of 2 ways: life according to the “flesh”, and life according to the Spirit.
“To set the mind on the flesh” means doing what comes naturally. It may have a veneer of respectability or sophistication, but it is ultimately selfish, competitive. It will love only if that is rewarding, be community minded only if there are benefits to the doer, and may at any point be cynical, greedy, or peevish. The only alternative is life empowered and directed by the Spirit of God. This is what makes the Christian life possible and rewarding (and not just a lot of hard work).
Someone will object that there is another alternative. What about following a moral code – like the 10 commandments? Paul has thought of that; indeed, as a pious Jew, he has lived it carefully for many years. He will say that such a moral code is good – indeed the Old Testament Law tells us vital things about what God is like, and what he expects of human beings. But if it is useful for that, it is absolutely hopeless for transforming us into people who can live like that.
It is all very well to know you ought to be patient, loving, joyful and generous. It is quite another thing to do it, and go on doing it! Either we lower our standards to “be reasonable”, or we find another way.
So we come back to this simple, and stark, alternative: You either live “naturally”, being selfish, or trying not to be, but discovering that there are tight limits on how much you can control yourself, or You live for God, handing your life (and all your resources) over to God’s direction. It’s a big step, but if you take it, go on taking it, and allow the Holy Spirit to control you, you should experience a slow transformation. It won’t happen fast, and it won’t solve all your problems, but you will begin to be changed. Not by your own effort, but as God works on your personality, your priorities, attitudes, and ambitions.
Paul defines a choice for you. You must answer which way you have chosen – and more important, which way you will now choose. Answer now for yourself, that you may be ready to answer to God.