An athlete has to check his skills and strength and train himself all the time to win the golden medal. It is the same with our faith. You have to enlighten your life with the word of God every day and to compensate for weak points in your life. For example, you have to turn discord into peace, and if you used to envy or be jealous, you have to pray and try your best to rejoice in others' successes. Only then will you be able to change by the grace of God and to reach the most beautiful kingdom of heaven in the end.