Self-Control Rolls for Odious Personal Habits?

[whswhs]

I wouldn't ever start applying self-control or frequency mods to OPH.

In the first place, it explicitly says that you don't do it all the time; rather, the penalty affects people who notice you doing it. So the fact that you might not be doing it at a specific moment is taken into account.

But in the second place, because it's a habit, anyone who knows you will come to be aware that you're doing it. Your being able to force yourself to hold back when it's urgent might delay this, but won't stop it. You shouldn't be able to avoid it just in a reliable way. If you can, I'd say it's no more than a quirk!