Know Your Enemy
Using the wrong defense against the sin nature (flesh) will only lead to frustration and failure.
The works of the flesh are described in detail for us in Galatians 5:19-21.
And the works of the flesh are manifest, which are adultery, fornication, uncleanliness, lasciviousness (lacking morals), idolatry, religious superstitious awe, enmity, strife, jealousy, anger, selfish ambition, divisions, heresy, envy, murder (Senseless slaughter), drunkenness, excessive carousing, and such like.
When we are struggling with these types of desires we are fighting with the sin nature (flesh) , not Satan, or the world system. God has provided to us a specific defense against each of these enemies that is only effective when used properly against the one attacking. The desires from Satan and the world system are different, even though both use the weakness of the flesh. Lying is not an attack from the sin nature (flesh) , it is not one of its works; rather, it is from Satan, where as the pride of life – one who thinks they are better than another because of where they live, the family they come from, the color of their skin, etc. – is from the world system.