Growing in holiness means allowing God to transform us from the inside out, becoming more like Him in our daily lives. True holiness involves being morally pure, spiritually whole, and set apart for God's purposes. Based on Ephesians 4:21-24, there are four essential steps: learning the truth about Jesus, putting off our old sinful nature, letting the Spirit renew our minds, and living out our new life in Christ. To avoid hypocrisy, we must practice what we teach, be authentic rather than putting on masks, focus on heart transformation over titles, avoid self-promotion, and allow God to clean us from the inside out.