I took the test online and got 50 out of 100.

I've been used and abused a lot especially at work (I think mostly because of my idealistic outlook and goody two shoes attitude) which made me want to understand the nature of users and manipulative people so that I can avoid their traps.. I'm wondering what is it that makes me a good target for their ploys. I realized I needed to understand how "evil" people perceive things, function and play people.

Where should I start? I'm an INTJ if that's helpful in anyway..