I would recommend looking into the concepts put forth by theologian Réginald Marie Garrigou-Lagrange, O.P. in his book
The Three Ages of the Interior Life : Prelude of Eternal Life.
The first of the three ages is the the “Purgative age”, in which we are cooperating with the waves of God’s grace in our life and working through prayer to identify our sins against God and repent of them.
Lagrange asserts that the three ages are not just a goal for those in religious life, but rather is the normal process meant for all Christians to attain holiness during this life.
We are meant to carryout our time in purgatory during our lifetime, but because of God’s overflowing mercy, He gives us the opportunity to complete the process after our death.
Purgatory may seem terrifying, but it’s important to remember this: if you are in purgatory, then you have won! You are destined for Heaven and are released from any prospects of going to Hell. The ultimate ending of the story of your life is that you are someone who has chosen God and His will.
You have said “Thy will be done” to God instead of “My will be done”.
I highly recommend the Fr. Mike Schmitz CD “The Four Last Things” in which he discusses Death, Judgment, Heaven, and Hell, but also discusses Purgatory and the three ages of the interior life.
Fr. Mike Schmitz is one of the leading Catholic speakers in the Church today. Fr.
www.lighthousecatholicmedia.org
Also, the below links have much more information regarding the three ages of the interior life:
http://www.christianperfection.info/