Pope Francis says be concrete. He says:
“Little children have that wisdom: when a child comes to confess, he never says something general. ‘But father, I did this and I did that to my aunt, another time I said this word’ and they say the word. But they are concrete, eh? They have that simplicity of the truth. And we always have the tendency to hide the reality of our failings. But there is something beautiful: when we confess our sins as they are in the presence of God, we always feel that grace of shame. Being ashamed in the sight of God is a grace. It is a grace."