What is the best weapon for self-defense?

Well, your going to start thinking about things like guns, knives, or maybe martial arts weapons. Some might consider anything of weight and mass that you can find in your environment. Then there are those martial artists who practice self-defense saying I would use this or that technique. In my perception all of those don't meet the best weapon title. 

What is the best weapon for self-defense? Your mind and your mind-set. All the weaponry in the world will do no good at all unless you have a proper mind-set. You might ask me, well explain yourself. That would be a huge post because I would have to gather all the data from all the sources and compile a terse version from those to explain and then list that bibliography at the end for further research. 

Let me just say that you can get an idea of what I am saying by reading all of Rory Miller's books, all of Marc MacYoung's books and the various blogs and web sites of these two professionals. Then go to their seminars, etc. if you can. They also have a variety of video's available on the subject of violence and self-defense. 

I may be wrong here as to my perception but what I gleamed from all of that and my meager experience and knowledge is that your best weapon for self-defense is your mind and mind-set.