There are many kinds of people and so are their pattern of thinking and behavior. Not much classification is there, but enough to categorize and put people in one or more types of personality groups based on their actions. But, there are a few traits that defines all kinds of personality type that you might belong to.
A stated acronym of Interversion, Sensing, Thinking and Judgement, where these four words basically sums up the character of these people. These are very logical, organized, sensible and traditionalist people who have a habit of keeping themselves and their environment very simplified and regulated.