Galatians 5: 19-25
The acts of the sinful nature are obvious: sexual immorality, impurity and debauchery; idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God. But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law. Those who belong to Christ Jesus have crucified the sinful nature with its passions and desires. Since we live by the Spirit, let us keep in step with the Spirit.
As long as you wallow in the acts of the sinful nature of the Devil in you, there is going to be problems in this world. It's best that you put to death all the misdeeds of the evil nature in you. You must be freed from it's destructive power. We may think that it will be harmless, if we were to just leave it dormant inside. No, it will be very harmful to you and those around you all the time. You have to consciously deal with it. You have to consciously crucify it on the cross. How do you do that?
Watch closely at the passions and desires it brings into. When they arise in you, that's the time for you to crucify it on that cross of Christ. He died on the cross for us as a hope that we will die to that very destructive nature of the Devil in us. We must willingly do this. We must choose to put it to death, like Christ our Lord put His body to death for our sins. Now, all you got to do is, put to death all the misdeeds of that very nature in you willingly for good. God the Holy Spirit is in you to help you put to death, as you obey everything He reminds you about Christ our Lord and everything He has commanded us to do. We must follow His leading, step by step towards the death of the sinful nature of the Devil in us and the successful formation of the divine nature of Christ in us. Obedience to all that Christ had commanded us, will bring about full Christformation in us to the eternal glory of the Father in Heaven.
Mark 7: 21-23
For from within, out of your hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and defile you."