Regrets are always made right through Jesus Christ ... "I when lifted up from the earth shall draw all men to myself." John 12:32
If any regret can be shared it is not being brought up in the word of God - the Bible... not knowing how the flesh was corrupted and indulging in it leads us down a path for further corruption. Yet, in view of John 12:32, and once a man/woman is born again in the Spirit, the word of God is made known to them as they are drawn to Him and regrets disappear.
We cannot thus morn the past. Eternal life belongs to those who can envision new life in Jesus Christ!