This is not any easy thing to do, but it should be every believer’s desire.
“So prepare your minds for action and exercise self-control. Put all your hope in the gracious salvation that will come to you when Jesus Christ is revealed to the world. So you must live as God’s obedient children. Don’t slip back into your old ways of living to satisfy your own desires. You didn’t know any better then. But now you must be holy in everything you do, just as God who chose you is holy. For the Scriptures say, ‘You must be holy because I am holy'”.
1 Peter 1:13-16 (NLT)