The sacrment of Reconciliation (commonly called Penance or Confession) is the method given by Christ to the Catholic Church by which men and women individually confess sins committed after Baptism, and have them absolved by a priest. First Reconciliation is received in the 2nd grade.
Act of Contrition:
“O, my God, I am heartily sorry for having offended you. 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 sin no more and to avoid the near occasion of sin”.