How to make an Act of Perfect Contrition
"Whoever can, should receive the Sacrament of Penance.  Whoever cannot, because of prohibiting circumstances, should cleanse his soul by acts of perfect contrition” St. Maximilian Kolbe
 
There are 2 types of contrition
Perfect Contrition: Out of love for God
Imperfect Contrition: Out of loss of Heaven, fear of Hell
 
When we go to confession, imperfect contrition is sufficient to receive the pardon of our sins.
However, in extraordinary circumstances where [when] we cannot get to confession, we can make an act of perfect contrition, which is sufficient to have our sins forgiven.
Important: The act of perfect contrition includes the desire for the sacrament of Penance (or Reconciliation) and the intention to receive sacramental confession at the very first opportunity.
 
O my God, I am heartily sorry for having offended you, and I detest all my sins, because I dread the loss of heaven and the pains of hell; but most of all because they offend you, my God, who are all good and deserving of all my love. I firmly resolve, with the help of your grace,

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

Amen.