Guilt never comes from God. Guilt comes from people intending to manipulate us or from misinformed teaching we learned as we grew up. Conviction comes from a God who loves us and wants to help us in our daily struggles.
It is hard to break old, traditional habits. When I first learned what I have just shared with you, it seemed Biblically sound, it made good intellectual sense and something in my spirit told me it was true.
Yet, it took me a whole year to be able to acknowledge my sin, thank Him for his forgiveness and ask for His help in dealing with sin in the future without feeling compelled to ask Him for forgiveness to clean my slate. It takes time.
I hope you will find this helpful as you assist friends and family struggling with disabling guilt feelings.