Youcat commented through CCC – Question n. 232 - Part VII.

YOUCAT Question n. 232 - Part VII. What must I bring to a confession?

(Youcat answer – repeated) Essential elements of every confession are an examination of conscience, contrition, a purpose of amendment, confession, and penance.

A deepening through CCC

(CCC 1491) The sacrament of Penance is a whole consisting in three actions of the penitent and the priest's absolution. The penitent's acts are repentance, confession or disclosure of sins to the priest, and the intention to make reparation and do works of reparation. (CCC 1492) Repentance (also called contrition) must be inspired by motives that arise from faith. If repentance arises from love of charity for God, it is called "perfect" contrition; if it is founded on other motives, it is called "imperfect."

Reflecting and meditating 

(Youcat comment) The examination of conscience should be done thoroughly, but it can never be exhaustive. No one can be absolved from his sin without real contrition, merely on the basis of “lip-service”. Equally indispensable is the purpose of amendment, the resolution not to commit that sin again in the future. The sinner absolutely must declare the sin to the confessor and, thus, confess to it. The final essential element of confession is the atonement or penance that the confessor imposes on the sinner to make restitution for the harm done.

(CCC Comment)

(CCC 1493) One who desires to obtain reconciliation with God and with the Church, must confess to a priest all the unconfessed grave sins he remembers after having carefully examined his conscience. The confession of venial faults, without being necessary in itself, is nevertheless strongly recommended by the Church. (CCC 1494) The confessor proposes the performance of certain acts of "satisfaction" or "penance" to be performed by the penitent in order to repair the harm caused by sin and to re-establish habits befitting a disciple of Christ.  

(The next question is: What sins must be confessed?)