I have sinned against both heaven and you, I am no longer worth of being called your son - Luke 15:18-19
Bible repeatedly teaches the importance of confession and tells us that God is faithful and just - 1 John 1:9
Jesus illustrates this point by telling the story of a father/son and then son coming to his senses
He returns home, confesses his sins and humbly asks his father if he could be one of his hired hands
The father wouldn't hear of it and welcomed his boy back into his home for a celebration - Luke 15:22-24
Confession to God and to others hurt by your actions is good for the soul