There are four steps in the Sacrament of Reconciliation:
A mature understanding of sin includes reflecting upon our thoughts, actions and omissions as well as examining the patterns of sin that may arise in our lives.
Contrition and conversion lead us to seek a forgiveness for our sins so as to repair damaged relationships with God, self, and others. We believe that only ordained priests have the faculty of absolving sins from the authority of the Church in the name of Jesus Christ (CCC 1495). Our sins are forgiven by God, through the priest.
The Spiritual effects of the Sacraments of Reconciliation include:
Individual confession with a priest is the principal means of absolution and reconciliation of grave sins within the Church. The Sacrament of Reconciliation frees us from sinful patterns of behavior and calls us to complete conversion to Christ. Reconciliation heals our sins and repairs our relationships.
O my God, I am heartily sorry for having offended You, and I detest all my sins because I dread the loss of Heaven and the pains of Hell, but most of all because they offend You, my God, Who are all good and deserving of all my love. I firmly resolve, with the help of Your grace, to confess my sins, to do penance, and to amend my life.
Amen.
Note: In the area of deliberate sexual sins listed below, all are mortal sins if there is sufficient reflection and full consent of the will. "No fornicators, idolaters, or adulterers, no sodomites,... will inherit the kingdom of God." (1 Cor 6:9-10) "Anyone who looks lustfully at a woman has already committed adultery with her in his thoughts." (Mt 5:28)