How can Christians avoid becoming slothful in zeal?

In Romans 12:11 we are commanded: Do not be slothful in zeal, be fervent in spirit, serve the Lord. (Romans 12:11). Love and respect are characteristic of the new disposition of Christians (Romans 12:2) and must therefore be continually nourished by the Spirit of Christ and by a willingness to be subservient to Jesus. As Lord and King, Christ can, by his Spirit, inspire in his subjects new virtues such as love, self-sacrifice, and self-denial. At the same time man is also able to counter these sources of energy by means of a fading zeal and decreasing interest. For a renewed life it is vital to keeps yourself open through an expectant attitude with regard to the work of the Spirit and the guidance of the Lord.¹