This is something I feel gets neglected by some schools. They get involved in being fancy, teaching how to defend against guns and knives. They learn all the tricks, but the one thing they don't ever dig into is the WHY of it all. They only do the what and how of self defense. The why is to live. With that in mind...
What is the general mindset that you HAVE or you teach?
Mine is that simply end the confrontation, and there are no rules to do that.
Read some of my threads on the subject. The point of self defense is defense of oneself (and family, friends, and whomever else one is with, of course). Too often self defense turns into ego defense or how to retaliate 101. Self defense can be anything from giving up your wallet, if that is the lowest risk thing to do in your mind to running away if you decide that is the safest bet, to duking it out if you feel that's the safest way to defend yourself in that situation. There are no hard-and-fast rules that describe all scenarios. One must think for oneself.
Expanding the topic of self defense even more, one can say that self defense includes situational awareness, not doing stupid or risky things (like getting drunk in public, going to bad parts of town, using and buying drugs from criminals, etc), knowing how to escape from your house in a fire (and practicing getting out, which no one does), having a plan to bug out if ITEOTWAWKI), knowing some first aid and having first aid equipment handy, knowing how to trap, hunt, prepare fresh meat, make a fire, orient yourself with a compass, raise crops, make alcohol (besides just for drinking), read clouds to understand weather when it is an immediate threat, and so on. This is all self defense, or self preservation if you will; it all comes under the same umbrella in the end - it's about protecting your own life from threats - whether from other people or from nature or governments or whatever. Yeah, even zombies (god I hate that meme, but whatever).
As far as that all relates to my MA training...it doesn't. I go to my karate classes to learn traditional Okinawan martial arts skills. We do practice some self defense techniques. But how that applies to any given self defense situation, we don't cover that. Any why should we? It's not a self defense school, it's a karate class.