Act of Contrition

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 confess my sins, to do penance, and to amend my life.
Amen.