I recently had a very good conversion experience because of a very holy priest(believe me, I am in need of more). He is known to possess the gift of ‘reading souls’ in the confessional(although he does not call it that) He has many of the gifts of the Holy Spirit, including Wisdom and Discernment. He talked for 3 days straight about confession and its importance. He, I am convinced, is absolutely the most holy priest I have ever heard in my lifetime, and I believe I listened to a future Saint speaking to me. I’ll tell you a few of the things he said, which might help your cause.
He told us there are at least 5 people(for the sake of a better term) in the confessional: you, the priest, Jesus, Mary, and the devil. The devil will do anything in his power(and we know how powerful he is) to have you conceal sins; even 1 sin and he wins. He will convince you that your sin(maybe one in particular) is too embarrassing to tell, or to great to be forgiven, or not important enough to confess.
He told us of many stories of him being attacked by the devil in the confessional(a few times even physically attacked), trying to pry sins out of people There is a war in each and every confession between the devil and Jesus with Mary present. The devil will atack the confessor and the priest.
Another thing he said is that at the General Judgement at the end of time, all of your sins that you have not confessed are told to the whole world. All of humanity from the beginning to the end of the world will be present. Imagine how embarrased you would be confessing your worst and most embarrasing sins to a room full of 30 people, he said, then imagine the whole world. He said any and all sins that are properly confessed will never be known to anyone. The devil cannot know your confessed sins, but he will know and can throw in your face at the Judgement, every sin that was not confessed. And every sin you confess will be forgotten by Jesus.
Also, the priest is given the power to forget your sins once you leave the confessional after a worthy confession.
It is such a great thing to go to confession monthly. It only takes a certain amount of deliberate venial sins to turn into a mortal sin. And in this day in age, with the amount of impuriy in the world, Mary has told us how many souls go to hell because of impurity. This priest told us that deliberate impure thoughts are mortal sins(which I did not even think of at the time), and then when we receive communion after that we blaspheme our Lord and turn mortal sins into more mortal sins.
Well Ill stop now…I could go on for a while…but pray that we can get more and more souls to the confessional.