To believe means to place all her hope in the Lord Jesus Christ. You need to remember that Jesus Christ died on the Cross for all our sins and purchased for us the gift of eternal salvation. God's mercy is infinite: "call upon Me in the day of trouble and I will deliver thee" (Psalm 49:15).
Confession is the great Christian Sacrament in which the penitent person is cleansed from sin by the Lord Jesus Christ. As taught by Holy Scripture: "If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness" (1 John, Chapter 1, verse 8). You must know that mentioning their sins in a home prayer is not enough, as the right to authorize the sins of the people the Lord gave to the apostles only and their successors – the bishops, the clergy.
To Confession to prepare in advance: you need to make peace with others, asking forgiveness from those offended. It is advisable to read literature about the Sacrament of Confession and Communion and remember all his sins (sometimes, not to forget, write them on a separate sheet). In the evening at home to read three canons: the Canon of Repentance to our Lord Jesus Christ, virgin Mary, guardian angel. You can use prayer books, where there are these three Canon.
To fulfill the penance assigned by the priest. Sometimes the priest may impose a penance on the penitent as an aid in the struggle against sin. As penance may be the strengthening of the rule of prayer, the ban on Communion for a certain time, fasting, pilgrimage to Holy places, alms, etc this should be treated as the will of God, intended for the healing of the soul. Penance requires a mandatory execution. If for any reason it is impossible to perform penance, you must contact the priest who has imposed it.