Keep the light of faith you received in baptism burning brightly. Walk always as a son or daughter of the light. Keep the flame of faith alive in your heart so that when the Lord comes, you may go out to meet Him with all the saints in the heavenly kingdom.
Do this through prayer, the sacraments, study of the faith, and good works.
Trent Horn, Why We're Catholic: Our Reasons for Faith, Hope, and Love (Amazon.ca link)