The Act of Contrition:

O my God,
I am heartily sorry for having offended Thee,
and I detest all my sins, because I dread the loss of Heaven,
and the pains of Hell; but most of all because I love 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.