Matthew 16:24-25 "Then Jesus said to His disciples, 'If anyone would come after Me, he must deny himself and take up his cross and follow Me. For whoever wants to save his life will lost it, but whoever loses his life for Me will find it." (emphasis added by me)
In John 12:24-25, Jesus says, "I tell you the truth, unless a kernel of wheat falls to the ground and dies, it remains only a single seed. But if it dies, it produces many seeds. The man who loves his life will lose it, while the man who hates his life in this world will keep it for eternal life."
Romans 8:13-14 says "For if you live according to the sinful nature, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live, because those who are led by the Spirit of God are songs of God."
Romans 12:1 "Therefore, I urge you, brothers, in view of God's mercy, to offer your bodies as living sacrifices, holy and pleasing to God - this is your spiritual act of worship."
Colossians 2:21-23 "Once you were alienated from God and were enemies in your minds because of your evil behavior. But now He has reconciled you by Christ's physical body through death to present you holy in His sight, without blemish and free from accusation - if you continue in your faith, established and firm, not moved from the hope held out in the gospel."
James 4:7 "Submit yourselves, then, to God. Resist the devil, and he will flee from you."
1 Peter 1:13-16 "Therefore, prepare your minds for action; be self-controlled; set your hope fully on the grace to be given you when Jesus Christ is revealed. As obedient children, do not conform to the evil desires you had when you lived in ignorance. But just as He who called you is holy, so be holy in all you do; for it is written: 'Be holy, because I am holy.'"
There's also some songs that talk about it!