My fake brother suggested I take a Myers-Brigg type test and I thought it’d be interesting, so I did it. Turns out I’m the INTJ type, what Keirsey says is rare and calls the “Mastermind”, with distinctive introvert expressions and moderate everything else. I’m enjoying reading verbal representations of things that I think and judge about myself, and reading/thinking about other personality types and how we interact and perceive each other. In true INTJ fashion, I don’t see many traits as necessarily positive/negative or as strengths/weaknesses, just that it is what it is.

The following excerpts from descriptions are scarily accurate; it was hard not to just copy-paste them in their entirety.

• Trying to anticipate every contingency, Masterminds never set off on their current project without a Plan A firmly in mind, but they are always prepared to switch to Plan B or C or D if need be.
• Although they are highly capable leaders, Masterminds are not at all eager to take command, preferring to stay in the background until others demonstrate their inability to lead.
• Masterminds do not feel bound by established rules and procedures, and traditional authority does not impress them, nor do slogans or catchwords.
• Problem-solving is highly stimulating to Masterminds, who love responding to tangled systems that require careful sorting out.
• To outsiders, INTJs may appear to project an aura of “definiteness”, of self-confidence. This self-confidence, sometimes mistaken for simple arrogance by the less decisive, is actually of a very specific rather than a general nature; its source lies in the specialized knowledge systems that most INTJs start building at an early age.
• INTJs are perfectionists, with a seemingly endless capacity for improving upon anything that takes their interest.
• Anyone considered to be “slacking,” including superiors, will lose their respect — and will generally be made aware of this; INTJs have also been known to take it upon themselves to implement critical decisions without consulting their supervisors or co-workers.
• [INTJs] tend to have little patience and less understanding of such things as small talk and flirtation.
• INTJs are usually extremely private people, and can often be naturally impassive as well, which makes them easy to misread and misunderstand.
• Others may see what is and wonder why; INTJs see what might be and say “Why not?!”

From http://keirsey.com/4temps/mastermind.asp and http://typelogic.com/intj.html