Traditional English
O my God, I am heartily sorry for having offended thee,
and I detest all my sins because of thy just punishments,
but most of all because they offend thee, my God,
who art all-good and deserving of all my love.
I firmly resolve, with the help of thy grace,
to sin no more and to avoid the near occasions of sin.
Amen.
Shorter form
Sufficient, and easier to have by heart when it is actually needed.
O my God, I am sorry for my sins with all my heart.
In choosing to do wrong and failing to do good,
I have sinned against thee, whom I should love above all things.
I firmly intend, with thy help, to do penance, to sin no more,
and to avoid whatever leads me to sin.
Amen.