Self-defense
So what is self-defense?
The working definition we use is: Using whatever means necessary to quickly end a situation that offers you grievous bodily injury.
Talking your way out of danger is self-defense. Running like hell is self-defense. Breaking someone's jaw so you can run fiercely from the six guys who are attacking you is self-defence. Pulling out a gun and blowing the head off the guy attacking you with a knife is self-defense. Not putting yourself in the situation in the first place however, is the best form of self-defense there is.
In short, self-defence is only oriented towards one thing: ending an immediate physical threat. How you go about it is a multi-layered strategy that far supercedes simple physical application.
Self-defense is *never* oriented towards ending a perceived emotional threat, such as hurt pride, wounded feelings or to prove yourself right. It is not a form of punishment or to prove your superiority over another human being.