It would not be far a field to state that the main objective for St. Paul in his epistles is salvation.  At the heart of all Christian theology is the redemptive work of Christ in his life, death, and resurrection.  It is the goal of preaching to have people experience the salvific work of Christ and become new creatures.  "Therefore if any man be in Christ, he is a new creature; old things have passed away; behold, all things are become new." 2Corth5:17  This newness or spiritual birth must be allowed to grow. 
"If we walk in the Spirit we will not fulfill the lusts of the flesh." Gal5:16  It could be said for St. Paul that it is our flesh or the remnants of  our carnal nature which quenches the Spirit. 1Thess5:19  Anger, envy, lying, fornication, gossip and the like are the fleshly things residing in the soul and body to be avoided to stay in the Spirit.  If we rid ourselves of the effects of these old nature maladies, we will walk in the Spirit and mature as Christians.  This is not easily accomplished.  St. Paul, however, gives us a clue as to how this can be done.

For we know that the Law is spiritual; but I am carnal, sold under sin.  For that which I do I allow not: for what I would, that I do not; but what I hate, that do I.  If then I do that which I would not; I consent unto the law that it is good. Now then it is no more I that do it, but sin that dwelleth in me.
Romans 7:14-17

St. Paul tells us to "mortify" the deeds of the flesh. Col 3:5  Another way to say this might be "not to give life" to the flesh or "not to give power" to the flesh.  In the quotation above, St. Paul does just that.  St. Paul states that it is not the manifest me that sins, but that it is the sin dwelling in him that goes against the Spirit of life.  This sin is the effect of our old nature affecting our soul and body.   This is significant.  St. Paul does not identify with sin.  He is a new creature in Christ and sin is not part of this new creation.  By not giving it power, by not identifying with sin, the flesh is mortified.  Our new creation is whole, complete, sinless, blameless, undaunted, joy-filled, eternal, energized, and fruitful.  Our old nature has corrupted our soul and body.   By being born again we receive a divine nature. 2Peter1  Moreover, what can be said here of sin can also be said of sickness and poverty.  God delights in the prosperity of his people, and we therefore, do not have to identify with what is sick in our body or what is impoverished in our circumstances.  By not identifying with them, we give them no life or power, and by faith we allow God to move in our lives and mortify them.  Consequently, all the problems we inherited by the fall are no longer operative because Christ has redeemed us from the curse of the law and we inherit all the blessings of Abraham and not Adam. Gal 3:19

Now our conditioning is such that we are all programmed to some extent to live defeated lives resulting from original sin.  The voices from the remnant of our Adamic nature whatever they are, fear, anger, resentment, envy, strife, inferiority must be defused of their power.  We must not identify with these voices or we will quench the Spirit.  We must grow in the Spirit by speaking positive, life-giving, scriptural, promises.  We must give power to the Word, not the author of lies.  By doing this we will live and walk in the Spirit and grow in grace and holiness and we will live in victory.

In summary, by being born-again, we become new creatures.  To mortify what our sin nature has done to our soul and body, we must not identify with sin, or sickness, or poverty.  We must reprogram our conscience from dead works by speaking and putting faith in the Word.  Finally, we must recognize what voice is speaking to us as we live in the world.  We must only give life to positive, affirmative, scriptural statements of God through His word and must reject the voice of the author of lies who tries to deflect us from living in victory. 

Amen.