New to the forum, and new to this idea of personality types. I used to read tons of biographies, and wonder to myself, what was it that allowed this person or that person the ability to achieve what he/she did? The idea of personality kind of put an end to a lot of debate within my head. Now I'm obsessed over the idea. That's what brings me here, to get a better understanding of it and discuss it with others. Does anybody know of any good books to read on the subject, lighter material, not as heavy as Jung?