XP

Self-inflicted pain can have a very strong calming affect. When you are in a very stressful situation, where your body is already showing natural signs of panic, self-inflicted pain can help you regain complete control.

Situations where this could be very useful:

If you ever need to lie about something

If you ever find yourself panicking

If you ever need to really focus

If you ever feel like you're falling asleep when you shouldn't be

Like everything else, only use this in moderation or it can become a problem.