Thank you for your responses. I do feel a little better.
But the thing is, I always have situations where I can’t tell whether the sin was venial or mortal, or maybe not even a sin at all. No matter how much I examine my conscience and replay the situation and think about what exactly happened, I never know for sure. Does anyone have any advice on this?
You are thinking too hard, falling into unfounded guilt which is not from God.
One suggestion I have heard for those who tend to overly focus on their sins is instead of doing an examination of conscience (still necessary before confession), but to perform an examination of consciousness. How has God acted in your life throughout the day? Focus on the blessings you have received, not your faults. Remember that you are a child of God. You are made in His image, transformed by grace.
About a month ago, the priest at Mass said that he has never heard anybody confess that they have not used the power each of us has. God dwells within us. See His image within yourself, not only in those you meet.
One day, years ago now, I did go through a week in which I was consciously aware of my sins. The more I focused on my sins, the more I felt God’s love and forgiveness.
We are not called to be God, simply the creatures he has made us to be. We are not called to be Jesus, in the sense that He walked the streets of Galilee. Rather we are to be as completely as possible the person, the creature, that God has called us to be.
I also like the prayer of Thomas Merton. I do not know Lord if I am following your will, but I do believe that my desire to follow your will means that I am indeed following your will (paraphrased). So relax. Be generous to yourself. See yourself as God see you, not the distorted view that Satan would press upon you.
Yes, do pray the prayer to St. Michael.