Confession

“Those who approach the sacrament of Penance obtain pardon from God’s mercy for the offense committed against him, and are, at the same time, reconciled with the Church which they have wounded by their sins and which by charity, by example, and by prayer labors for their conversion.” (Catechism of the Catholic Church, 1422)

"Let us lay aside every encumbrance of sin which clings to us and persevere in running the race which lies ahead; let us keep our eyes fixed on Jesus, who inspires and perfects our faith." (Hebrews 12:1)

You can also make an appointment to go to confession.