“If you think in terms of… an obsessive-compulsive disorder but add to it a spiritual and, most particularly, a moral component then you have what we call “scrupulosity.”
Scrupulosity is so-called because the Latin word scrupulus means a sharp little stone. Everyone knows what it is like to have a little sharp stone in a shoe. It can be the most expensive pair of shoes in the world, but that little stone ruins everything. You might be able to walk for miles, but it is killing you all the time. It is like having a tiny little speck in your eye. It’s a scrupulus, a tiny, little, sharp stone. Those who experience scrupulosity experience this tiny, little, sharp stone, as it were, in their consciences, in their very beings, which keeps them constantly anxious, constantly concerned and, above all, constantly afraid…
Scrupulosity always involves fear: fear of dying without being able to get to confession, fear of not being forgiven by Almighty God, fear of going to hell.”