Martyn Lloyd-Jones in Spiritual Depression: Its Causes and Cure:
There is nothing that is so calculated to promote holiness as the realization that we are heirs of God and joint heirs with Christ, that our destiny is certain and secure, that nothing can prevent it. Realizing that, we purify ourselves even as He is pure, and we feel that there is no time to waste. That is the way to live the Christian life!
Do not turn it into a law, but realize that you have received the Holy Spirit. Then work out this theme. Your Father is watching over you. He is looking after you — yes, let ms use scriptural language — He is jealous concerning you because you belong to Him. You belong to Christ, you are His brother. The Holy Spirit is dwelling in your very body and you are destined for glory.