“He disciplines us for our good, so that we may share His holiness. All discipline for the moment seems not to be joyful, but sorrowful;  yet to those who have been trained by it, afterwards it yields the peaceful fruit of righteousness.”         Hebrews 12:28-29

“For the sorrow that is according to the will of God produces a repentance without regret, leading to salvation, but the sorrow of the world produces death.”          2 Corinthians 7:10
When you sin and are caught in it, do you squirm with the shame of it, the embarrassment it causes you, sorry for your damaged reputation and for the hurt it has caused both you and other people?  Are you angry that you have been found out?  Do you grieve over the seeming hopelessness of your hurtful habits, now discovered?
Or, do you recognize this as an opportunity to rejoice?  That your doctor has put His finger on the sick part, and that healing is on the way?  Now that the hideous, offending sickness has been made known, both Doctor and patient can cooperate to exterminate the disease, allowing health to return.
This is a repentance without regret, resulting in relief and healing.  Relief that we no longer have to keep up appearances, hoping that we will not be found out.  We can gladly agree with our Diagnostician that, Yes, that is right where it hurts!  Can You fix me, please?