0 Penance

Penance is, according to the Roman Catholic Church, the sacrament of reconciliation that "reestablishes a right relationship between God and a wayward Catholic."1 It is something the person does.  Penance is "always, by its very nature, a liturgical action, and therefore an ecclesiastical and public action," (Catechism of the Catholic Church, par. 1482) and consists of a greeting from the priest, the reading of the Bible, "an exhortation to repentance," confession to a priest, the "acceptance of penance," absolution from the priest, and a "prayer of thanksgiving," (CCC, 1480). 

0 Why do Roman Catholics believe what they do?

I'm very concerned about Catholics.  I believe wholeheartedly that the RCC is teaching enough heresy to damn its members.  I don't mean to be offensive with these words, but they are what I believe.
When I quote official RC documents (on the CARM Forums) that contradict scripture, the Catholics do whatever they can to continue to believe and defend whatever the Mother Church tells them -- no matter what.  You see, they often just believe whatever the Church tells them.  For example, the CCC mentions becoming gods (CCC 795) or becoming Christ (CCC 795).