"I am the LORD, who brought you up out of Egypt to be your God; therefore be holy, because I am holy." Leviticus 11:45
To be holy means "to be set apart." It does not mean to run off and hide in a cave so as not to have contact with the world. To be holy means to live in purity and moral integrity as we go about the business of our lives. To be holy means that we strive to live apart from the things that oppose God and the things that God opposes.
Our standard for holiness is not a set of rules or an abstract religious system. Our standard is not our mentor or a Christian friend. Our standard for holy living is God Himself. He alone is holy.
Now it's true that absolute holiness cannot be achieved in this life. In our humanity, we will miss the mark. But it should be the believer's desire to be in a process of spiritual growth--conforming our lives to God's holy standard. This is done as we continually depend on the Spirit to control our attitudes, thoughts, desires and actions. While we will never live sinless lives on this earth, it is possible, by the strength of the Spirit, to sin less and obey more. That's the high standard to which God has called His children. And that should be the desire of His children.
Father, help us pinpoint a sin that seems to constantly trip us up. We depend on You to resist it day by day, moment by moment. Help us so that sin will be less of a threat in our walk with You. In Jesus' name. Amen.