Ok, everyone, let’s pray:
Lord God Almighty, I come before you, your most unworthy servant, having sinned against You. There is no way to justify my actions, and I am sorry. I thank you, Jesus, for sacrificing yourself for someone like me, and I ask Your forgiveness. Lord, I don’t want to go to hell; I want to go to heaven, even though I know I don’t deserve it. Please, Father, through the merits of Your only son, Jesus Christ, help me to get there. I know it will take work on my part. It will not be easy. I will need to turn away from my sins and do good things in Your name. I need to learn how to love You, and to love my neighbor. I will do my best, but I’m only human and I can never be perfect. Sometimes I go astray. Please, I beg You, never give up on me. I humbly ask you do whatever it takes to wake me up. Even though I try so hard to do Your will, it’s not always easy. But I hope that You will keep pulling me back, as many times as it takes. Let me live with the confidence that You love me and that there’s hope for me. Dear Lord, I love You and I praise you, for You are all good! Amen.
I just wrote it up in a flash, and I invite anyone to improve on it who wishes!
Let me also suggest: daily prayer, bible reading, regular mass attendance and reconciliation. Consider the rosary and various chaplets (I say the Chaplet of St. Michael, Chaplet of Divine Mercy, Chaplet of Holy Wounds, and Chaplet of the Sacred Heart of Jesus daily). Pray the Seven Sorrows chaplets on Tuesdays and Fridays. Look up the promises associated with these prayers online. As I recall, one who devoutly prays these (and/or propagating them to others) should be able to skip purgatory, or have it greatly reduced. Look up the promises of devotion to First Friday and First Saturday attendance as well!
God Bless!