James 4:4
You adulterers! Don't you realize that friendship with the world makes you an enemy of God? I say it again: If you want to be a friend of the world, you make yourself an enemy of God.
How can I go about in a daily practical way NOT being a friend with, to, of, the world?
Deuteronomy 1:17, Proverbs 11:1, Proverbs 1:10-16, 1 Peter 4:3-5. Actually, if you read the book of 1 Timothy, it speaks with a lot of relevance to this question. It even seems to be written as though St. Paul knew it's words would speak to a wider audience, so that it's words are designed as instruction to us just as much as to Timothy.
The main essence of being not friends with the world, is to refine ourselves in holiness so that we are blameless and set apart from them, not joining in with their ways. St. Paul writes in 1 Timothy 6:6-9 that this means to be content with food and clothing. In verse 10 he says that some people are lured away from this contentment by the love of money, and it ensnares them in all sorts of sin. He goes to say in verse 12 and 13, that being content with food and clothing, we should pursue righteousness ("moral justification" - a clear conscience and expecting it of others), godliness, faithfulness, love, perseverance and gentleness. To fight the good fight of faith. This means to never concede that faithlessness or wickedness is acceptable, as most Christians have become accustomed to do through their tolerance for lewdness in society - a weakness brought into their righteousness through worldly media. For this reason, it is not good to indulge in television or music where there are themes of sexual immorality, violence or unholy behaviour. Every time we tolerate that behaviour, we are choosing to suppress The Holy Spirit's objection to it in order to allow a Satanic spirit to deceive us.
Who may go up on the mountain of
Adonai? Who may stand in His holy place?
One with clean hands and a pure heart, who has not lifted his soul in vain, nor sworn deceitfully.
He will receive a blessing from
Adonai, righteousness from God his salvation.
Such is the generation seeking Him, seeking Your face, even Jacob!
Selah.
Psalms 24:3-6