Take this test to determine your four-letter Myers-Briggs Type Indicator(MBTI) and then post it here:
This system is very famous and so just googling your MBTI will turn up thousands of sites with information. A good, reputable place to start is link
Keirsey divides the 16 types into 4 temperaments:
I'm an INTJ, so I'm a Rational and my type is called the Mastermind. XD
How about you?