Confession is the sacrament in which Christ forgives us our daily sins and that is why Catholics go to confession regularly. (faith.org.uk)
Moreover, a man can never absolve himself and decide with certainty whether his daily sins which he must acknowledge do not hide a radical No to God, even though he hopes that they do not exclude him from the kingdom of God. (religion-online.org)
And of course the hardest part — confessing our daily sin, including unforgiveness of others and seeking to rectify that. (redeeminggod.com)