“Strive for peace with all men, and for holiness
without which no one will see God.”
Holiness is Supernatural.
This is by far the most important characteristic of holiness. Even the discipline required to maintain practical day to day holiness is a fruit of the Holy Spirit in our lives. Don't miss the fact that God's Spirit is the HOLY Spirit.
All holiness in the human heart begins with the new birth. Only God can change your nature. You must be born of the Spirit.
In the Lord's Prayer Jesus instructed us to pray lest we be led into temptation and that we might be delivered from evil. I often need to pray for God to deliver me from lust or from entering situations where I will be tempted to lust or to some other sin.
We are tempted by an unholy heart, an unholy world and the enemy of all holiness. But we can call upon God to change our hearts and deliver us from temptation.