We are usually apprehensive about having to undergo surgery, because the outcome is not always predictable. Only cataract surgery was known as "happy surgery" since no one dies from it.
The Holy Spirit also operates on us by removing the "bad" parts of our soul, leaving behind a cleansed, purer soul. I would call this Joyful Surgery. Ask the Holy Spirit to operate on you if you feel the need. Celebrate the occasion if grateful tears follow.