Repentance is not "emotion from regret". Judas had that. He had it so bad he offed himself. The emotion of GODLY SORROW however is what will PRODUCE REPENTANCE. Thus proving repentance is not an emotion or a cathartic emotional release, but a turning that is the RESULT of the tissue-time at the altar:
2 Corinthians 7:9-10 KJV
Now I rejoice, not that ye were made sorry, but that ye sorrowed
to repentance: for ye were made sorry after a godly manner, that ye might receive damage by us in nothing. [10] For
godly sorrow worketh repentance to salvation not to be repented of: but the sorrow of the world worketh death.