Have you Crucified your Flesh?
Gal 5:24 Those who belong to Christ Jesus have crucified the sinful nature with its passions and desires.
Likewise Paul writes, "if you live according to the sinful nature, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live." Rom 8:13 This is not something which passively occurs for the Christian, but rather something in which the Christian has actively involved himself. For in Gal 5:24 who does the crucifying? Those who belong to Christ.
If you belong to Christ you will break your allegiance with your sinful nature with its passions and desires and reckon it your enemy. And so the rest of your life will be lived at odds with your sinful nature. Thus one has to constantly evaluate whether particular passions and desires which surface are due to the sinful nature, in which case they are to be discarded, or to the Spirit. That's part of the Christian life.