@-jimi- I strongly suggest you look into Cognitive Functions and also (especially) Socionics, as they're a lot more accurate and MBTI's basically a load of silly stereotypes :P I only asked you about it because I figured you've probably heard of it since it's a lot more popular than the other two.

@kim_johnson I've read a little bit about Jung and I would love learning more about the actual history behind it all. Thanks for giving me a sort of place to start looking. It's really sad how people are unable to do anything to help actually better things.. I wouldn't even know where to start if I tried to help change things. I suppose I would just start by exploring works that have already been published? If I did that, would I be able to go to college for medical/psychiatric research and then be able to further develop the system? Or would it all just end up not really doing anything because then counselors wouldn't end up making enough money?? :P Terrible how it works. Maybe we could develop some sort of alter self help program in America to help people by giving them helpful information.. I suppose we already have the internet, but I've really had to explore a lot and dig deep in order to find helpful resources. Maybe if there were an easier way to discover problems? Or if they were more widely known? I don't know...